diff --git a/composer.lock b/composer.lock
index 24614ed09..41dfebf07 100644
--- a/composer.lock
+++ b/composer.lock
@@ -282,29 +282,29 @@
         },
         {
             "name": "dealerdirect/phpcodesniffer-composer-installer",
-            "version": "v1.1.2",
+            "version": "v1.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPCSStandards/composer-installer.git",
-                "reference": "e9cf5e4bbf7eeaf9ef5db34938942602838fc2b1"
+                "reference": "845eb62303d2ca9b289ef216356568ccc075ffd1"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPCSStandards/composer-installer/zipball/e9cf5e4bbf7eeaf9ef5db34938942602838fc2b1",
-                "reference": "e9cf5e4bbf7eeaf9ef5db34938942602838fc2b1",
+                "url": "https://api.github.com/repos/PHPCSStandards/composer-installer/zipball/845eb62303d2ca9b289ef216356568ccc075ffd1",
+                "reference": "845eb62303d2ca9b289ef216356568ccc075ffd1",
                 "shasum": ""
             },
             "require": {
                 "composer-plugin-api": "^2.2",
                 "php": ">=5.4",
-                "squizlabs/php_codesniffer": "^2.0 || ^3.1.0 || ^4.0"
+                "squizlabs/php_codesniffer": "^3.1.0 || ^4.0"
             },
             "require-dev": {
                 "composer/composer": "^2.2",
                 "ext-json": "*",
                 "ext-zip": "*",
                 "php-parallel-lint/php-parallel-lint": "^1.4.0",
-                "phpcompatibility/php-compatibility": "^9.0",
+                "phpcompatibility/php-compatibility": "^9.0 || ^10.0.0@dev",
                 "yoast/phpunit-polyfills": "^1.0"
             },
             "type": "composer-plugin",
@@ -374,7 +374,7 @@
                     "type": "thanks_dev"
                 }
             ],
-            "time": "2025-07-17T20:45:56+00:00"
+            "time": "2025-11-11T04:32:07+00:00"
         },
         {
             "name": "doctrine/instantiator",
@@ -2552,16 +2552,16 @@
         },
         {
             "name": "squizlabs/php_codesniffer",
-            "version": "3.13.4",
+            "version": "3.13.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPCSStandards/PHP_CodeSniffer.git",
-                "reference": "ad545ea9c1b7d270ce0fc9cbfb884161cd706119"
+                "reference": "0ca86845ce43291e8f5692c7356fccf3bcf02bf4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/ad545ea9c1b7d270ce0fc9cbfb884161cd706119",
-                "reference": "ad545ea9c1b7d270ce0fc9cbfb884161cd706119",
+                "url": "https://api.github.com/repos/PHPCSStandards/PHP_CodeSniffer/zipball/0ca86845ce43291e8f5692c7356fccf3bcf02bf4",
+                "reference": "0ca86845ce43291e8f5692c7356fccf3bcf02bf4",
                 "shasum": ""
             },
             "require": {
@@ -2578,11 +2578,6 @@
                 "bin/phpcs"
             ],
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.x-dev"
-                }
-            },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
                 "BSD-3-Clause"
@@ -2632,7 +2627,7 @@
                     "type": "thanks_dev"
                 }
             ],
-            "time": "2025-09-05T05:47:09+00:00"
+            "time": "2025-11-04T16:30:35+00:00"
         },
         {
             "name": "symfony/console",
diff --git a/includes/class-modal-checkout.php b/includes/class-modal-checkout.php
index 7b718b496..6d62b13bf 100644
--- a/includes/class-modal-checkout.php
+++ b/includes/class-modal-checkout.php
@@ -759,6 +759,7 @@ public static function enqueue_scripts() {
 					'billing_details'  => self::get_modal_checkout_labels( 'billing_details' ),
 					'shipping_details' => self::get_modal_checkout_labels( 'shipping_details' ),
 					'gift_recipient'   => self::get_modal_checkout_labels( 'gift_recipient' ),
+					'critical_error'   => self::get_modal_checkout_labels( 'checkout_critical_error' ),
 					'complete_button'  => self::order_button_text_with_price(),
 				],
 			]
@@ -970,6 +971,7 @@ public static function enqueue_modal( $product_id = null ) {
 					'register_modal_title' => self::get_modal_checkout_labels( 'register_modal_title' ),
 					'signin_modal_title'   => self::get_modal_checkout_labels( 'signin_modal_title' ),
 					'thankyou_modal_title' => self::get_modal_checkout_labels( 'checkout_success' ),
+					'critical_error'       => self::get_modal_checkout_labels( 'checkout_critical_error' ),
 				],
 
 				'processing_payment_messages'     => [
@@ -977,6 +979,10 @@ public static function enqueue_modal( $product_id = null ) {
 						'text'  => __( 'Processing payment...', 'newspack-blocks' ),
 						'delay' => 0,
 					],
+					[
+						'text'  => __( 'Processing payment...', 'newspack-blocks' ),
+						'delay' => 250,
+					],
 					[
 						'text'  => __( 'Verifying details...', 'newspack-blocks' ),
 						'delay' => 8000,
@@ -1551,7 +1557,7 @@ public static function woocommerce_cart_product_cannot_be_purchased_message( $me
 	 */
 	public static function hide_expiry_message_shop_link( $message ) {
 		if ( self::is_modal_checkout() && strpos( $message, 'Sorry, your session has expired' ) !== false ) {
-			return __( 'Could not complete this transaction. Please contact us for assistance.', 'newspack-blocks' );
+			return self::get_modal_checkout_labels( 'checkout_critical_error' );
 		}
 		return $message;
 	}
@@ -2029,6 +2035,7 @@ public static function get_modal_checkout_labels( $key = null ) {
 				'checkout_nyp_thankyou'      => __( "Thank you for your generosity! We couldn't do this without you!", 'newspack-blocks' ),
 				'checkout_nyp_title'         => __( 'Increase your support', 'newspack-blocks' ),
 				'checkout_nyp_apply'         => __( 'Apply', 'newspack-blocks' ),
+				'checkout_critical_error'    => __( 'We ran into a problem processing this request. Please try again.', 'newspack-blocks' ),
 			];
 
 			/**
diff --git a/languages/newspack-blocks-de_DE.po b/languages/newspack-blocks-de_DE.po
index 816522916..75fda48d8 100644
--- a/languages/newspack-blocks-de_DE.po
+++ b/languages/newspack-blocks-de_DE.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Newspack Blocks\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/project\n"
-"POT-Creation-Date: 2025-11-13T18:38:30+00:00\n"
+"POT-Creation-Date: 2025-11-24T20:10:24+00:00\n"
 "PO-Revision-Date: 2024-08-30 08:45-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -77,169 +77,169 @@ msgstr ""
 msgid "Or"
 msgstr ""
 
-#: includes/class-modal-checkout.php:977
+#: includes/class-modal-checkout.php:979 includes/class-modal-checkout.php:983
 msgid "Processing payment..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:981
+#: includes/class-modal-checkout.php:987
 msgid "Verifying details..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:985
+#: includes/class-modal-checkout.php:991
 msgid "Finalizing transaction..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1041
+#: includes/class-modal-checkout.php:1047
 msgid ""
 "We're sorry, there was an unexpected error. Please try again in a few "
 "minutes."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1053
+#: includes/class-modal-checkout.php:1059
 msgid "Go back"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1143
+#: includes/class-modal-checkout.php:1149
 msgid "Password mismatch"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1144
+#: includes/class-modal-checkout.php:1150
 msgid "Password strength: Very weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1145
+#: includes/class-modal-checkout.php:1151
 msgid "Password strength: Weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1146
+#: includes/class-modal-checkout.php:1152
 msgid "Password strength: Medium"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1147
+#: includes/class-modal-checkout.php:1153
 msgid "Password strength: Strong"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1328
+#: includes/class-modal-checkout.php:1334
 msgid "Please enter someone else' email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1329
+#: includes/class-modal-checkout.php:1335
 msgid "Please enter a valid email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1418
+#: includes/class-modal-checkout.php:1424
 msgid "Close window"
 msgstr ""
 
 #. translators: %s: Site name.
-#: includes/class-modal-checkout.php:1505
+#: includes/class-modal-checkout.php:1511
 #, php-format
 msgid ""
 "You're already a subscriber! You can only have one active subscription at a "
 "time. Thank you for supporting %s."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1516
+#: includes/class-modal-checkout.php:1522
 msgid ""
 "You're already a subscriber! You can only have one subscription at a time. "
 "If you wish to renew an expired subscription, please sign in and visit the "
 "subscriptions page on your account."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1554
-msgid "Could not complete this transaction. Please contact us for assistance."
-msgstr ""
-
 #. translators: 1: Checkout button confirmation text. 2: Order total.
 #. translators: 1 is the name of the item. 2 is the price of the item.
-#: includes/class-modal-checkout.php:1640
-#: includes/modal-checkout/class-checkout-data.php:67
+#: includes/class-modal-checkout.php:1646
+#: includes/modal-checkout/class-checkout-data.php:68
 #, php-format
 msgid "%1$s: %2$s"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1999
+#: includes/class-modal-checkout.php:2005
 msgid "Billing details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2000
+#: includes/class-modal-checkout.php:2006
 msgid "Shipping details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2001
+#: includes/class-modal-checkout.php:2007
 msgid "Gift recipient"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2002
-#: includes/class-modal-checkout.php:2003
-#: includes/class-modal-checkout.php:2004
+#: includes/class-modal-checkout.php:2008
+#: includes/class-modal-checkout.php:2009
+#: includes/class-modal-checkout.php:2010
 msgid "Complete your transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2005
+#: includes/class-modal-checkout.php:2011
 msgctxt "Login modal title when logged out user attempts to checkout."
 msgid "Sign in to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2010
+#: includes/class-modal-checkout.php:2016
 msgctxt "Login modal title when unregistered user attempts to checkout"
 msgid "Register to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2015
+#: includes/class-modal-checkout.php:2021
 msgid "Continue browsing"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2016
+#: includes/class-modal-checkout.php:2022
 msgid "This donation is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2021
+#: includes/class-modal-checkout.php:2027
 msgid "This purchase is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2023
+#: includes/class-modal-checkout.php:2029
 msgid "Complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2024
+#: includes/class-modal-checkout.php:2030
 msgid "Purchase"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2025
+#: includes/class-modal-checkout.php:2031
 msgid "Edit billing information"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2026 dist/editor.js:29
+#: includes/class-modal-checkout.php:2032 dist/editor.js:29
 #: src/blocks/checkout-button/edit.js:192
 msgid "Cancel"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2027
+#: includes/class-modal-checkout.php:2033
 msgid "Transaction successful"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2028
+#: includes/class-modal-checkout.php:2034
 msgid ""
 "Your contribution directly funds our work. If you're moved to do so, you can "
 "opt to pay more than the standard rate."
 msgstr ""
 
-#: includes/class-modal-checkout.php:2029
+#: includes/class-modal-checkout.php:2035
 msgid "Thank you for your generosity! We couldn't do this without you!"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2030
+#: includes/class-modal-checkout.php:2036
 msgid "Increase your support"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2031
+#: includes/class-modal-checkout.php:2037
 #: src/modal-checkout/templates/form-coupon.php:20
 msgid "Apply"
 msgstr ""
 
+#: includes/class-modal-checkout.php:2038
+msgid "We ran into a problem processing this request. Please try again."
+msgstr ""
+
 #. Translators: %s is the site name.
-#: includes/class-modal-checkout.php:2168
+#: includes/class-modal-checkout.php:2175
 #, php-format
 msgid ""
 "Thank you for supporting %s. Your transaction was completed successfully."
@@ -318,7 +318,7 @@ msgstr ""
 msgid " per "
 msgstr ""
 
-#: includes/modal-checkout/class-checkout-data.php:301 dist/editor.js:35
+#: includes/modal-checkout/class-checkout-data.php:310 dist/editor.js:35
 #: src/blocks/donate/index.js:31
 msgid "Donate"
 msgstr "Spenden"
diff --git a/languages/newspack-blocks-es_ES.po b/languages/newspack-blocks-es_ES.po
index e87702a77..ba8a79e15 100644
--- a/languages/newspack-blocks-es_ES.po
+++ b/languages/newspack-blocks-es_ES.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Newspack Blocks 1.0.0-alpha.20\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/project\n"
-"POT-Creation-Date: 2025-11-13T18:38:30+00:00\n"
+"POT-Creation-Date: 2025-11-24T20:10:24+00:00\n"
 "PO-Revision-Date: 2025-08-12T14:56:45+00:00\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -69,169 +69,169 @@ msgstr ""
 msgid "Or"
 msgstr ""
 
-#: includes/class-modal-checkout.php:977
+#: includes/class-modal-checkout.php:979 includes/class-modal-checkout.php:983
 msgid "Processing payment..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:981
+#: includes/class-modal-checkout.php:987
 msgid "Verifying details..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:985
+#: includes/class-modal-checkout.php:991
 msgid "Finalizing transaction..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1041
+#: includes/class-modal-checkout.php:1047
 msgid ""
 "We're sorry, there was an unexpected error. Please try again in a few "
 "minutes."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1053
+#: includes/class-modal-checkout.php:1059
 msgid "Go back"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1143
+#: includes/class-modal-checkout.php:1149
 msgid "Password mismatch"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1144
+#: includes/class-modal-checkout.php:1150
 msgid "Password strength: Very weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1145
+#: includes/class-modal-checkout.php:1151
 msgid "Password strength: Weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1146
+#: includes/class-modal-checkout.php:1152
 msgid "Password strength: Medium"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1147
+#: includes/class-modal-checkout.php:1153
 msgid "Password strength: Strong"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1328
+#: includes/class-modal-checkout.php:1334
 msgid "Please enter someone else' email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1329
+#: includes/class-modal-checkout.php:1335
 msgid "Please enter a valid email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1418
+#: includes/class-modal-checkout.php:1424
 msgid "Close window"
 msgstr ""
 
 #. translators: %s: Site name.
-#: includes/class-modal-checkout.php:1505
+#: includes/class-modal-checkout.php:1511
 #, php-format
 msgid ""
 "You're already a subscriber! You can only have one active subscription at a "
 "time. Thank you for supporting %s."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1516
+#: includes/class-modal-checkout.php:1522
 msgid ""
 "You're already a subscriber! You can only have one subscription at a time. "
 "If you wish to renew an expired subscription, please sign in and visit the "
 "subscriptions page on your account."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1554
-msgid "Could not complete this transaction. Please contact us for assistance."
-msgstr ""
-
 #. translators: 1: Checkout button confirmation text. 2: Order total.
 #. translators: 1 is the name of the item. 2 is the price of the item.
-#: includes/class-modal-checkout.php:1640
-#: includes/modal-checkout/class-checkout-data.php:67
+#: includes/class-modal-checkout.php:1646
+#: includes/modal-checkout/class-checkout-data.php:68
 #, php-format
 msgid "%1$s: %2$s"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1999
+#: includes/class-modal-checkout.php:2005
 msgid "Billing details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2000
+#: includes/class-modal-checkout.php:2006
 msgid "Shipping details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2001
+#: includes/class-modal-checkout.php:2007
 msgid "Gift recipient"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2002
-#: includes/class-modal-checkout.php:2003
-#: includes/class-modal-checkout.php:2004
+#: includes/class-modal-checkout.php:2008
+#: includes/class-modal-checkout.php:2009
+#: includes/class-modal-checkout.php:2010
 msgid "Complete your transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2005
+#: includes/class-modal-checkout.php:2011
 msgctxt "Login modal title when logged out user attempts to checkout."
 msgid "Sign in to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2010
+#: includes/class-modal-checkout.php:2016
 msgctxt "Login modal title when unregistered user attempts to checkout"
 msgid "Register to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2015
+#: includes/class-modal-checkout.php:2021
 msgid "Continue browsing"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2016
+#: includes/class-modal-checkout.php:2022
 msgid "This donation is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2021
+#: includes/class-modal-checkout.php:2027
 msgid "This purchase is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2023
+#: includes/class-modal-checkout.php:2029
 msgid "Complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2024
+#: includes/class-modal-checkout.php:2030
 msgid "Purchase"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2025
+#: includes/class-modal-checkout.php:2031
 msgid "Edit billing information"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2026 dist/editor.js:29
+#: includes/class-modal-checkout.php:2032 dist/editor.js:29
 #: src/blocks/checkout-button/edit.js:192
 msgid "Cancel"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2027
+#: includes/class-modal-checkout.php:2033
 msgid "Transaction successful"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2028
+#: includes/class-modal-checkout.php:2034
 msgid ""
 "Your contribution directly funds our work. If you're moved to do so, you can "
 "opt to pay more than the standard rate."
 msgstr ""
 
-#: includes/class-modal-checkout.php:2029
+#: includes/class-modal-checkout.php:2035
 msgid "Thank you for your generosity! We couldn't do this without you!"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2030
+#: includes/class-modal-checkout.php:2036
 msgid "Increase your support"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2031
+#: includes/class-modal-checkout.php:2037
 #: src/modal-checkout/templates/form-coupon.php:20
 msgid "Apply"
 msgstr ""
 
+#: includes/class-modal-checkout.php:2038
+msgid "We ran into a problem processing this request. Please try again."
+msgstr ""
+
 #. Translators: %s is the site name.
-#: includes/class-modal-checkout.php:2168
+#: includes/class-modal-checkout.php:2175
 #, php-format
 msgid ""
 "Thank you for supporting %s. Your transaction was completed successfully."
@@ -310,7 +310,7 @@ msgstr ""
 msgid " per "
 msgstr ""
 
-#: includes/modal-checkout/class-checkout-data.php:301 dist/editor.js:35
+#: includes/modal-checkout/class-checkout-data.php:310 dist/editor.js:35
 #: src/blocks/donate/index.js:31
 msgid "Donate"
 msgstr ""
diff --git a/languages/newspack-blocks-fr_BE.po b/languages/newspack-blocks-fr_BE.po
index e1a3856a1..0ed081853 100644
--- a/languages/newspack-blocks-fr_BE.po
+++ b/languages/newspack-blocks-fr_BE.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Newspack Blocks 1.0.0-alpha.25\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/project\n"
-"POT-Creation-Date: 2025-11-13T18:38:30+00:00\n"
+"POT-Creation-Date: 2025-11-24T20:10:24+00:00\n"
 "PO-Revision-Date: 2024-08-30 08:46-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -67,169 +67,169 @@ msgstr ""
 msgid "Or"
 msgstr ""
 
-#: includes/class-modal-checkout.php:977
+#: includes/class-modal-checkout.php:979 includes/class-modal-checkout.php:983
 msgid "Processing payment..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:981
+#: includes/class-modal-checkout.php:987
 msgid "Verifying details..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:985
+#: includes/class-modal-checkout.php:991
 msgid "Finalizing transaction..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1041
+#: includes/class-modal-checkout.php:1047
 msgid ""
 "We're sorry, there was an unexpected error. Please try again in a few "
 "minutes."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1053
+#: includes/class-modal-checkout.php:1059
 msgid "Go back"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1143
+#: includes/class-modal-checkout.php:1149
 msgid "Password mismatch"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1144
+#: includes/class-modal-checkout.php:1150
 msgid "Password strength: Very weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1145
+#: includes/class-modal-checkout.php:1151
 msgid "Password strength: Weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1146
+#: includes/class-modal-checkout.php:1152
 msgid "Password strength: Medium"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1147
+#: includes/class-modal-checkout.php:1153
 msgid "Password strength: Strong"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1328
+#: includes/class-modal-checkout.php:1334
 msgid "Please enter someone else' email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1329
+#: includes/class-modal-checkout.php:1335
 msgid "Please enter a valid email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1418
+#: includes/class-modal-checkout.php:1424
 msgid "Close window"
 msgstr ""
 
 #. translators: %s: Site name.
-#: includes/class-modal-checkout.php:1505
+#: includes/class-modal-checkout.php:1511
 #, php-format
 msgid ""
 "You're already a subscriber! You can only have one active subscription at a "
 "time. Thank you for supporting %s."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1516
+#: includes/class-modal-checkout.php:1522
 msgid ""
 "You're already a subscriber! You can only have one subscription at a time. "
 "If you wish to renew an expired subscription, please sign in and visit the "
 "subscriptions page on your account."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1554
-msgid "Could not complete this transaction. Please contact us for assistance."
-msgstr ""
-
 #. translators: 1: Checkout button confirmation text. 2: Order total.
 #. translators: 1 is the name of the item. 2 is the price of the item.
-#: includes/class-modal-checkout.php:1640
-#: includes/modal-checkout/class-checkout-data.php:67
+#: includes/class-modal-checkout.php:1646
+#: includes/modal-checkout/class-checkout-data.php:68
 #, php-format
 msgid "%1$s: %2$s"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1999
+#: includes/class-modal-checkout.php:2005
 msgid "Billing details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2000
+#: includes/class-modal-checkout.php:2006
 msgid "Shipping details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2001
+#: includes/class-modal-checkout.php:2007
 msgid "Gift recipient"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2002
-#: includes/class-modal-checkout.php:2003
-#: includes/class-modal-checkout.php:2004
+#: includes/class-modal-checkout.php:2008
+#: includes/class-modal-checkout.php:2009
+#: includes/class-modal-checkout.php:2010
 msgid "Complete your transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2005
+#: includes/class-modal-checkout.php:2011
 msgctxt "Login modal title when logged out user attempts to checkout."
 msgid "Sign in to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2010
+#: includes/class-modal-checkout.php:2016
 msgctxt "Login modal title when unregistered user attempts to checkout"
 msgid "Register to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2015
+#: includes/class-modal-checkout.php:2021
 msgid "Continue browsing"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2016
+#: includes/class-modal-checkout.php:2022
 msgid "This donation is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2021
+#: includes/class-modal-checkout.php:2027
 msgid "This purchase is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2023
+#: includes/class-modal-checkout.php:2029
 msgid "Complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2024
+#: includes/class-modal-checkout.php:2030
 msgid "Purchase"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2025
+#: includes/class-modal-checkout.php:2031
 msgid "Edit billing information"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2026 dist/editor.js:29
+#: includes/class-modal-checkout.php:2032 dist/editor.js:29
 #: src/blocks/checkout-button/edit.js:192
 msgid "Cancel"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2027
+#: includes/class-modal-checkout.php:2033
 msgid "Transaction successful"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2028
+#: includes/class-modal-checkout.php:2034
 msgid ""
 "Your contribution directly funds our work. If you're moved to do so, you can "
 "opt to pay more than the standard rate."
 msgstr ""
 
-#: includes/class-modal-checkout.php:2029
+#: includes/class-modal-checkout.php:2035
 msgid "Thank you for your generosity! We couldn't do this without you!"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2030
+#: includes/class-modal-checkout.php:2036
 msgid "Increase your support"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2031
+#: includes/class-modal-checkout.php:2037
 #: src/modal-checkout/templates/form-coupon.php:20
 msgid "Apply"
 msgstr ""
 
+#: includes/class-modal-checkout.php:2038
+msgid "We ran into a problem processing this request. Please try again."
+msgstr ""
+
 #. Translators: %s is the site name.
-#: includes/class-modal-checkout.php:2168
+#: includes/class-modal-checkout.php:2175
 #, php-format
 msgid ""
 "Thank you for supporting %s. Your transaction was completed successfully."
@@ -308,7 +308,7 @@ msgstr ""
 msgid " per "
 msgstr ""
 
-#: includes/modal-checkout/class-checkout-data.php:301 dist/editor.js:35
+#: includes/modal-checkout/class-checkout-data.php:310 dist/editor.js:35
 #: src/blocks/donate/index.js:31
 msgid "Donate"
 msgstr ""
diff --git a/languages/newspack-blocks-nb_NO.po b/languages/newspack-blocks-nb_NO.po
index af68d3e04..32a0f4731 100644
--- a/languages/newspack-blocks-nb_NO.po
+++ b/languages/newspack-blocks-nb_NO.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Newspack Blocks 1.0.0-alpha.20\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/project\n"
-"POT-Creation-Date: 2025-11-13T18:38:30+00:00\n"
+"POT-Creation-Date: 2025-11-24T20:10:24+00:00\n"
 "PO-Revision-Date: 2024-08-30 08:46-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -67,169 +67,169 @@ msgstr ""
 msgid "Or"
 msgstr ""
 
-#: includes/class-modal-checkout.php:977
+#: includes/class-modal-checkout.php:979 includes/class-modal-checkout.php:983
 msgid "Processing payment..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:981
+#: includes/class-modal-checkout.php:987
 msgid "Verifying details..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:985
+#: includes/class-modal-checkout.php:991
 msgid "Finalizing transaction..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1041
+#: includes/class-modal-checkout.php:1047
 msgid ""
 "We're sorry, there was an unexpected error. Please try again in a few "
 "minutes."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1053
+#: includes/class-modal-checkout.php:1059
 msgid "Go back"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1143
+#: includes/class-modal-checkout.php:1149
 msgid "Password mismatch"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1144
+#: includes/class-modal-checkout.php:1150
 msgid "Password strength: Very weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1145
+#: includes/class-modal-checkout.php:1151
 msgid "Password strength: Weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1146
+#: includes/class-modal-checkout.php:1152
 msgid "Password strength: Medium"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1147
+#: includes/class-modal-checkout.php:1153
 msgid "Password strength: Strong"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1328
+#: includes/class-modal-checkout.php:1334
 msgid "Please enter someone else' email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1329
+#: includes/class-modal-checkout.php:1335
 msgid "Please enter a valid email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1418
+#: includes/class-modal-checkout.php:1424
 msgid "Close window"
 msgstr ""
 
 #. translators: %s: Site name.
-#: includes/class-modal-checkout.php:1505
+#: includes/class-modal-checkout.php:1511
 #, php-format
 msgid ""
 "You're already a subscriber! You can only have one active subscription at a "
 "time. Thank you for supporting %s."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1516
+#: includes/class-modal-checkout.php:1522
 msgid ""
 "You're already a subscriber! You can only have one subscription at a time. "
 "If you wish to renew an expired subscription, please sign in and visit the "
 "subscriptions page on your account."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1554
-msgid "Could not complete this transaction. Please contact us for assistance."
-msgstr ""
-
 #. translators: 1: Checkout button confirmation text. 2: Order total.
 #. translators: 1 is the name of the item. 2 is the price of the item.
-#: includes/class-modal-checkout.php:1640
-#: includes/modal-checkout/class-checkout-data.php:67
+#: includes/class-modal-checkout.php:1646
+#: includes/modal-checkout/class-checkout-data.php:68
 #, php-format
 msgid "%1$s: %2$s"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1999
+#: includes/class-modal-checkout.php:2005
 msgid "Billing details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2000
+#: includes/class-modal-checkout.php:2006
 msgid "Shipping details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2001
+#: includes/class-modal-checkout.php:2007
 msgid "Gift recipient"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2002
-#: includes/class-modal-checkout.php:2003
-#: includes/class-modal-checkout.php:2004
+#: includes/class-modal-checkout.php:2008
+#: includes/class-modal-checkout.php:2009
+#: includes/class-modal-checkout.php:2010
 msgid "Complete your transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2005
+#: includes/class-modal-checkout.php:2011
 msgctxt "Login modal title when logged out user attempts to checkout."
 msgid "Sign in to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2010
+#: includes/class-modal-checkout.php:2016
 msgctxt "Login modal title when unregistered user attempts to checkout"
 msgid "Register to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2015
+#: includes/class-modal-checkout.php:2021
 msgid "Continue browsing"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2016
+#: includes/class-modal-checkout.php:2022
 msgid "This donation is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2021
+#: includes/class-modal-checkout.php:2027
 msgid "This purchase is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2023
+#: includes/class-modal-checkout.php:2029
 msgid "Complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2024
+#: includes/class-modal-checkout.php:2030
 msgid "Purchase"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2025
+#: includes/class-modal-checkout.php:2031
 msgid "Edit billing information"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2026 dist/editor.js:29
+#: includes/class-modal-checkout.php:2032 dist/editor.js:29
 #: src/blocks/checkout-button/edit.js:192
 msgid "Cancel"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2027
+#: includes/class-modal-checkout.php:2033
 msgid "Transaction successful"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2028
+#: includes/class-modal-checkout.php:2034
 msgid ""
 "Your contribution directly funds our work. If you're moved to do so, you can "
 "opt to pay more than the standard rate."
 msgstr ""
 
-#: includes/class-modal-checkout.php:2029
+#: includes/class-modal-checkout.php:2035
 msgid "Thank you for your generosity! We couldn't do this without you!"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2030
+#: includes/class-modal-checkout.php:2036
 msgid "Increase your support"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2031
+#: includes/class-modal-checkout.php:2037
 #: src/modal-checkout/templates/form-coupon.php:20
 msgid "Apply"
 msgstr ""
 
+#: includes/class-modal-checkout.php:2038
+msgid "We ran into a problem processing this request. Please try again."
+msgstr ""
+
 #. Translators: %s is the site name.
-#: includes/class-modal-checkout.php:2168
+#: includes/class-modal-checkout.php:2175
 #, php-format
 msgid ""
 "Thank you for supporting %s. Your transaction was completed successfully."
@@ -308,7 +308,7 @@ msgstr ""
 msgid " per "
 msgstr ""
 
-#: includes/modal-checkout/class-checkout-data.php:301 dist/editor.js:35
+#: includes/modal-checkout/class-checkout-data.php:310 dist/editor.js:35
 #: src/blocks/donate/index.js:31
 msgid "Donate"
 msgstr ""
diff --git a/languages/newspack-blocks-pt_PT.po b/languages/newspack-blocks-pt_PT.po
index 339cb2db5..4c8f7e82f 100644
--- a/languages/newspack-blocks-pt_PT.po
+++ b/languages/newspack-blocks-pt_PT.po
@@ -2,7 +2,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Newspack Blocks 1.0.0-alpha.25\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/project\n"
-"POT-Creation-Date: 2025-11-13T18:38:30+00:00\n"
+"POT-Creation-Date: 2025-11-24T20:10:24+00:00\n"
 "PO-Revision-Date: 2024-08-30 08:46-0700\n"
 "Last-Translator: \n"
 "Language-Team: \n"
@@ -67,169 +67,169 @@ msgstr ""
 msgid "Or"
 msgstr ""
 
-#: includes/class-modal-checkout.php:977
+#: includes/class-modal-checkout.php:979 includes/class-modal-checkout.php:983
 msgid "Processing payment..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:981
+#: includes/class-modal-checkout.php:987
 msgid "Verifying details..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:985
+#: includes/class-modal-checkout.php:991
 msgid "Finalizing transaction..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1041
+#: includes/class-modal-checkout.php:1047
 msgid ""
 "We're sorry, there was an unexpected error. Please try again in a few "
 "minutes."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1053
+#: includes/class-modal-checkout.php:1059
 msgid "Go back"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1143
+#: includes/class-modal-checkout.php:1149
 msgid "Password mismatch"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1144
+#: includes/class-modal-checkout.php:1150
 msgid "Password strength: Very weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1145
+#: includes/class-modal-checkout.php:1151
 msgid "Password strength: Weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1146
+#: includes/class-modal-checkout.php:1152
 msgid "Password strength: Medium"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1147
+#: includes/class-modal-checkout.php:1153
 msgid "Password strength: Strong"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1328
+#: includes/class-modal-checkout.php:1334
 msgid "Please enter someone else' email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1329
+#: includes/class-modal-checkout.php:1335
 msgid "Please enter a valid email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1418
+#: includes/class-modal-checkout.php:1424
 msgid "Close window"
 msgstr ""
 
 #. translators: %s: Site name.
-#: includes/class-modal-checkout.php:1505
+#: includes/class-modal-checkout.php:1511
 #, php-format
 msgid ""
 "You're already a subscriber! You can only have one active subscription at a "
 "time. Thank you for supporting %s."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1516
+#: includes/class-modal-checkout.php:1522
 msgid ""
 "You're already a subscriber! You can only have one subscription at a time. "
 "If you wish to renew an expired subscription, please sign in and visit the "
 "subscriptions page on your account."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1554
-msgid "Could not complete this transaction. Please contact us for assistance."
-msgstr ""
-
 #. translators: 1: Checkout button confirmation text. 2: Order total.
 #. translators: 1 is the name of the item. 2 is the price of the item.
-#: includes/class-modal-checkout.php:1640
-#: includes/modal-checkout/class-checkout-data.php:67
+#: includes/class-modal-checkout.php:1646
+#: includes/modal-checkout/class-checkout-data.php:68
 #, php-format
 msgid "%1$s: %2$s"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1999
+#: includes/class-modal-checkout.php:2005
 msgid "Billing details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2000
+#: includes/class-modal-checkout.php:2006
 msgid "Shipping details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2001
+#: includes/class-modal-checkout.php:2007
 msgid "Gift recipient"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2002
-#: includes/class-modal-checkout.php:2003
-#: includes/class-modal-checkout.php:2004
+#: includes/class-modal-checkout.php:2008
+#: includes/class-modal-checkout.php:2009
+#: includes/class-modal-checkout.php:2010
 msgid "Complete your transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2005
+#: includes/class-modal-checkout.php:2011
 msgctxt "Login modal title when logged out user attempts to checkout."
 msgid "Sign in to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2010
+#: includes/class-modal-checkout.php:2016
 msgctxt "Login modal title when unregistered user attempts to checkout"
 msgid "Register to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2015
+#: includes/class-modal-checkout.php:2021
 msgid "Continue browsing"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2016
+#: includes/class-modal-checkout.php:2022
 msgid "This donation is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2021
+#: includes/class-modal-checkout.php:2027
 msgid "This purchase is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2023
+#: includes/class-modal-checkout.php:2029
 msgid "Complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2024
+#: includes/class-modal-checkout.php:2030
 msgid "Purchase"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2025
+#: includes/class-modal-checkout.php:2031
 msgid "Edit billing information"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2026 dist/editor.js:29
+#: includes/class-modal-checkout.php:2032 dist/editor.js:29
 #: src/blocks/checkout-button/edit.js:192
 msgid "Cancel"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2027
+#: includes/class-modal-checkout.php:2033
 msgid "Transaction successful"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2028
+#: includes/class-modal-checkout.php:2034
 msgid ""
 "Your contribution directly funds our work. If you're moved to do so, you can "
 "opt to pay more than the standard rate."
 msgstr ""
 
-#: includes/class-modal-checkout.php:2029
+#: includes/class-modal-checkout.php:2035
 msgid "Thank you for your generosity! We couldn't do this without you!"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2030
+#: includes/class-modal-checkout.php:2036
 msgid "Increase your support"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2031
+#: includes/class-modal-checkout.php:2037
 #: src/modal-checkout/templates/form-coupon.php:20
 msgid "Apply"
 msgstr ""
 
+#: includes/class-modal-checkout.php:2038
+msgid "We ran into a problem processing this request. Please try again."
+msgstr ""
+
 #. Translators: %s is the site name.
-#: includes/class-modal-checkout.php:2168
+#: includes/class-modal-checkout.php:2175
 #, php-format
 msgid ""
 "Thank you for supporting %s. Your transaction was completed successfully."
@@ -308,7 +308,7 @@ msgstr ""
 msgid " per "
 msgstr ""
 
-#: includes/modal-checkout/class-checkout-data.php:301 dist/editor.js:35
+#: includes/modal-checkout/class-checkout-data.php:310 dist/editor.js:35
 #: src/blocks/donate/index.js:31
 msgid "Donate"
 msgstr "Doação"
diff --git a/languages/newspack-blocks.pot b/languages/newspack-blocks.pot
index f48ae4523..d290bb7da 100644
--- a/languages/newspack-blocks.pot
+++ b/languages/newspack-blocks.pot
@@ -2,14 +2,14 @@
 # This file is distributed under the same license as the Newspack Blocks plugin.
 msgid ""
 msgstr ""
-"Project-Id-Version: Newspack Blocks 4.17.4\n"
+"Project-Id-Version: Newspack Blocks 4.18.0\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/project\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"POT-Creation-Date: 2025-11-13T18:38:30+00:00\n"
+"POT-Creation-Date: 2025-11-24T20:10:24+00:00\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "X-Generator: WP-CLI 2.12.0\n"
 "X-Domain: newspack-blocks\n"
@@ -68,161 +68,162 @@ msgstr ""
 msgid "Or"
 msgstr ""
 
-#: includes/class-modal-checkout.php:977
+#: includes/class-modal-checkout.php:979
+#: includes/class-modal-checkout.php:983
 msgid "Processing payment..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:981
+#: includes/class-modal-checkout.php:987
 msgid "Verifying details..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:985
+#: includes/class-modal-checkout.php:991
 msgid "Finalizing transaction..."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1041
+#: includes/class-modal-checkout.php:1047
 msgid "We're sorry, there was an unexpected error. Please try again in a few minutes."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1053
+#: includes/class-modal-checkout.php:1059
 msgid "Go back"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1143
+#: includes/class-modal-checkout.php:1149
 msgid "Password mismatch"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1144
+#: includes/class-modal-checkout.php:1150
 msgid "Password strength: Very weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1145
+#: includes/class-modal-checkout.php:1151
 msgid "Password strength: Weak"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1146
+#: includes/class-modal-checkout.php:1152
 msgid "Password strength: Medium"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1147
+#: includes/class-modal-checkout.php:1153
 msgid "Password strength: Strong"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1328
+#: includes/class-modal-checkout.php:1334
 msgid "Please enter someone else' email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1329
+#: includes/class-modal-checkout.php:1335
 msgid "Please enter a valid email address to receive this gift."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1418
+#: includes/class-modal-checkout.php:1424
 msgid "Close window"
 msgstr ""
 
 #. translators: %s: Site name.
-#: includes/class-modal-checkout.php:1505
+#: includes/class-modal-checkout.php:1511
 #, php-format
 msgid "You're already a subscriber! You can only have one active subscription at a time. Thank you for supporting %s."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1516
+#: includes/class-modal-checkout.php:1522
 msgid "You're already a subscriber! You can only have one subscription at a time. If you wish to renew an expired subscription, please sign in and visit the subscriptions page on your account."
 msgstr ""
 
-#: includes/class-modal-checkout.php:1554
-msgid "Could not complete this transaction. Please contact us for assistance."
-msgstr ""
-
 #. translators: 1: Checkout button confirmation text. 2: Order total.
 #. translators: 1 is the name of the item. 2 is the price of the item.
-#: includes/class-modal-checkout.php:1640
-#: includes/modal-checkout/class-checkout-data.php:67
+#: includes/class-modal-checkout.php:1646
+#: includes/modal-checkout/class-checkout-data.php:68
 #, php-format
 msgid "%1$s: %2$s"
 msgstr ""
 
-#: includes/class-modal-checkout.php:1999
+#: includes/class-modal-checkout.php:2005
 msgid "Billing details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2000
+#: includes/class-modal-checkout.php:2006
 msgid "Shipping details"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2001
+#: includes/class-modal-checkout.php:2007
 msgid "Gift recipient"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2002
-#: includes/class-modal-checkout.php:2003
-#: includes/class-modal-checkout.php:2004
+#: includes/class-modal-checkout.php:2008
+#: includes/class-modal-checkout.php:2009
+#: includes/class-modal-checkout.php:2010
 msgid "Complete your transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2005
+#: includes/class-modal-checkout.php:2011
 msgctxt "Login modal title when logged out user attempts to checkout."
 msgid "Sign in to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2010
+#: includes/class-modal-checkout.php:2016
 msgctxt "Login modal title when unregistered user attempts to checkout"
 msgid "Register to complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2015
+#: includes/class-modal-checkout.php:2021
 msgid "Continue browsing"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2016
+#: includes/class-modal-checkout.php:2022
 msgid "This donation is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2021
+#: includes/class-modal-checkout.php:2027
 msgid "This purchase is a gift"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2023
+#: includes/class-modal-checkout.php:2029
 msgid "Complete transaction"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2024
+#: includes/class-modal-checkout.php:2030
 msgid "Purchase"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2025
+#: includes/class-modal-checkout.php:2031
 msgid "Edit billing information"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2026
+#: includes/class-modal-checkout.php:2032
 #: dist/editor.js:29
 #: src/blocks/checkout-button/edit.js:192
 msgid "Cancel"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2027
+#: includes/class-modal-checkout.php:2033
 msgid "Transaction successful"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2028
+#: includes/class-modal-checkout.php:2034
 msgid "Your contribution directly funds our work. If you're moved to do so, you can opt to pay more than the standard rate."
 msgstr ""
 
-#: includes/class-modal-checkout.php:2029
+#: includes/class-modal-checkout.php:2035
 msgid "Thank you for your generosity! We couldn't do this without you!"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2030
+#: includes/class-modal-checkout.php:2036
 msgid "Increase your support"
 msgstr ""
 
-#: includes/class-modal-checkout.php:2031
+#: includes/class-modal-checkout.php:2037
 #: src/modal-checkout/templates/form-coupon.php:20
 msgid "Apply"
 msgstr ""
 
+#: includes/class-modal-checkout.php:2038
+msgid "We ran into a problem processing this request. Please try again."
+msgstr ""
+
 #. Translators: %s is the site name.
-#: includes/class-modal-checkout.php:2168
+#: includes/class-modal-checkout.php:2175
 #, php-format
 msgid "Thank you for supporting %s. Your transaction was completed successfully."
 msgstr ""
@@ -300,7 +301,7 @@ msgstr ""
 msgid " per "
 msgstr ""
 
-#: includes/modal-checkout/class-checkout-data.php:301
+#: includes/modal-checkout/class-checkout-data.php:310
 #: dist/editor.js:35
 #: src/blocks/donate/index.js:31
 msgid "Donate"
diff --git a/newspack-blocks.php b/newspack-blocks.php
index 987de23ed..07f2a00cf 100755
--- a/newspack-blocks.php
+++ b/newspack-blocks.php
@@ -7,7 +7,7 @@
  * Author URI:      https://newspack.com/
  * Text Domain:     newspack-blocks
  * Domain Path:     /languages
- * Version:         4.18.0
+ * Version:         4.19.0-alpha.1
  *
  * @package         Newspack_Blocks
  */
@@ -15,13 +15,14 @@
 define( 'NEWSPACK_BLOCKS__PLUGIN_FILE', __FILE__ );
 define( 'NEWSPACK_BLOCKS__BLOCKS_DIRECTORY', 'dist/' );
 define( 'NEWSPACK_BLOCKS__PLUGIN_DIR', plugin_dir_path( NEWSPACK_BLOCKS__PLUGIN_FILE ) );
-define( 'NEWSPACK_BLOCKS__VERSION', '4.18.0' );
+define( 'NEWSPACK_BLOCKS__VERSION', '4.19.0-alpha.1' );
 
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/class-newspack-blocks.php';
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/class-newspack-blocks-api.php';
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/class-newspack-blocks-patterns.php';
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/class-newspack-blocks-caching.php';
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/modal-checkout/class-checkout-data.php';
+require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/modal-checkout/class-change-payment-gateway.php';
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/class-modal-checkout.php';
 
 require_once NEWSPACK_BLOCKS__PLUGIN_DIR . 'includes/plugins/class-the-events-calendar.php';
diff --git a/package-lock.json b/package-lock.json
index fe474f064..fec593676 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
 				"swiper": "12.0.3"
 			},
 			"devDependencies": {
-				"@types/lodash": "^4.17.20",
+				"@types/lodash": "^4.17.21",
 				"newspack-components": "^4.2.0",
 				"newspack-scripts": "^5.8.0"
 			}
@@ -7366,10 +7366,11 @@
 			"license": "MIT"
 		},
 		"node_modules/@types/lodash": {
-			"version": "4.17.20",
-			"resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.17.20.tgz",
-			"integrity": "sha512-H3MHACvFUEiujabxhaI/ImO6gUrd8oOurg7LQtS7mbwIXA/cUqWrvBsaeJ23aZEPk1TAYkurjfMbSELfoCXlGA==",
-			"dev": true
+			"version": "4.17.21",
+			"resolved": "https://registry.npmjs.org/@types/lodash/-/lodash-4.17.21.tgz",
+			"integrity": "sha512-FOvQ0YPD5NOfPgMzJihoT+Za5pdkDJWcbpuj1DjaKZIr/gxodQjY/uWEFlTNqW2ugXHUiL8lRQgw63dzKHZdeQ==",
+			"dev": true,
+			"license": "MIT"
 		},
 		"node_modules/@types/mime": {
 			"version": "1.3.5",
diff --git a/package.json b/package.json
index 567b2bc82..ff4abc32b 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
 		"swiper": "12.0.3"
 	},
 	"devDependencies": {
-		"@types/lodash": "^4.17.20",
+		"@types/lodash": "^4.17.21",
 		"newspack-components": "^4.2.0",
 		"newspack-scripts": "^5.8.0"
 	},
diff --git a/src/blocks/carousel/editor.scss b/src/blocks/carousel/editor.scss
index 493ec7a0b..568d4d4e4 100644
--- a/src/blocks/carousel/editor.scss
+++ b/src/blocks/carousel/editor.scss
@@ -1,6 +1,10 @@
 @use "newspack-colors" as np-colors;
 @use "../../shared/sass/placeholder";
 
+.wp-block:has(> .wpnbpc) {
+	max-width: 100%;
+}
+
 .wp-block-newspack-blocks-carousel {
 	.swiper-wrapper {
 		height: auto;
@@ -43,6 +47,7 @@
 		margin-right: 1.5em;
 	}
 }
+
 .editor-block-list__layout .editor-block-list__block .wpnbpc .entry-title a,
 .editor-block-list__layout .editor-block-list__block .wpnbpc .entry-meta .byline a {
 	color: inherit;
diff --git a/src/blocks/carousel/view.scss b/src/blocks/carousel/view.scss
index 5201571ec..bdc9e01e7 100644
--- a/src/blocks/carousel/view.scss
+++ b/src/blocks/carousel/view.scss
@@ -6,6 +6,7 @@
 .wp-block-newspack-blocks-carousel {
 	position: relative;
 	margin-top: 0;
+	max-width: 100%;
 
 	article {
 		max-width: 100%;
diff --git a/src/modal-checkout/index.js b/src/modal-checkout/index.js
index 813bd2a12..5238186d5 100644
--- a/src/modal-checkout/index.js
+++ b/src/modal-checkout/index.js
@@ -8,7 +8,7 @@ import './checkout.scss';
  * Internal dependencies
  */
 import { manageCheckoutAttempt, manageCheckoutSuccess, manageLoaded, managePagination } from './analytics';
-import { domReady } from './utils';
+import { domReady, onCheckoutPlaceOrderProcessing } from './utils';
 
 ( $ => {
 	domReady( () => {
@@ -26,6 +26,7 @@ import { domReady } from './utils';
 		const placeOrderStartEvent = new CustomEvent( 'checkout-place-order-start' );
 		const placeOrderSuccessEvent = new CustomEvent( 'checkout-place-order-success' );
 		const placeOrderErrorEvent = new CustomEvent( 'checkout-place-order-error' );
+		const placeOrderCriticalErrorEvent = new CustomEvent( 'checkout-place-order-critical-error' );
 
 		function getEventHandlers( element, event ) {
 			const events = $._data( element, 'events' );
@@ -121,16 +122,30 @@ import { domReady } from './utils';
 					placedOrder = true;
 					container.dispatchEvent( placeOrderStartEvent );
 				} );
+				onCheckoutPlaceOrderProcessing( container, function () {
+					if ( ! placedOrder ) {
+						return;
+					}
+					// If the form stops processing before the `checkout_place_order_success` event is fired, dispatch an error event.
+					if ( ! $form.is( '.processing' ) ) {
+						placedOrder = false;
+						container.dispatchEvent( placeOrderErrorEvent );
+					}
+				} );
 				$form.on( 'checkout_place_order_success', function () {
 					placedOrder = false;
 					container.dispatchEvent( placeOrderSuccessEvent );
 				} );
 
-				$( document.body ).on( 'checkout_error', function () {
+				$( document.body ).on( 'checkout_error', function ( event, errors ) {
 					if ( ! placedOrder ) {
 						return;
 					}
 					placedOrder = false;
+					if ( errors && errors.indexOf( newspackBlocksModalCheckout.labels.critical_error ) >= 0 ) {
+						container.dispatchEvent( placeOrderCriticalErrorEvent );
+						return;
+					}
 					container.dispatchEvent( placeOrderErrorEvent );
 				} );
 				$form.on( 'update_checkout', function () {
diff --git a/src/modal-checkout/modal.js b/src/modal-checkout/modal.js
index 09f20f1b7..a1eaaee04 100644
--- a/src/modal-checkout/modal.js
+++ b/src/modal-checkout/modal.js
@@ -18,6 +18,7 @@ import {
 	onCheckoutCancel,
 	onCheckoutPlaceOrderStart,
 	onCheckoutPlaceOrderError,
+	onCheckoutPlaceOrderCriticalError,
 	createHiddenInput,
 	triggerFormSubmit,
 	getCheckoutData,
@@ -39,6 +40,9 @@ let inCheckoutIntent = false;
 // Checkout title.
 let checkoutTitle = newspackBlocksModal.labels.checkout_modal_title;
 
+// Last-submitted checkout form.
+let activeCheckoutForm = null;
+
 // Close the modal.
 const closeModal = el => {
 	if ( el.overlayId && window.newspackReaderActivation?.overlays ) {
@@ -129,13 +133,14 @@ domReady( () => {
 			processingPaymentTimeouts = [];
 		};
 
-		const renderProcessingPaymentScreen = () => {
+		const renderProcessingPaymentScreen = event => {
 			spinner.querySelectorAll( `.${ PROCESSING_PAYMENT_TEXT_CLASS }` ).forEach( node => node.remove() );
 			spinner.style.display = 'flex';
 			clearProcessingPaymentTimeouts();
 			processingPaymentText.textContent = PROCESSING_PAYMENT_MESSAGES[ 0 ]?.text ?? '';
 			PROCESSING_PAYMENT_MESSAGES.slice( 1 ).forEach( ( { text, delay } ) => {
 				const timeoutId = setTimeout( () => {
+					event.target.dispatchEvent( new CustomEvent( 'checkout-place-order-processing' ) );
 					processingPaymentText.textContent = text;
 				}, delay );
 				processingPaymentTimeouts.push( timeoutId );
@@ -164,6 +169,15 @@ domReady( () => {
 				summaryTextNode.textContent = checkoutData.price_summary;
 			}
 
+			// Display initial errors if any.
+			if ( modalCheckout.initialErrors ) {
+				const errorContainer = document.createElement( 'div' );
+				errorContainer.classList.add( 'woocommerce-error' );
+				errorContainer.textContent = modalCheckout.initialErrors;
+				container.prepend( errorContainer );
+				delete modalCheckout.initialErrors;
+			}
+
 			// Revert modal title and width default value.
 			setModalSize();
 			setModalTitle( checkoutTitle );
@@ -192,6 +206,20 @@ domReady( () => {
 
 			hideProcessingPaymentScreen();
 		} );
+
+		// Resubmit modal checkout form if an unrecoverable error is encountered.
+		const refreshCheckout = form => {
+			if ( ! form ) {
+				return;
+			}
+			closeCheckout();
+			spinner.style.display = 'none';
+			modalCheckout.initialErrors = newspackBlocksModal.labels.critical_error;
+			form.requestSubmit( form.querySelector( 'button[type="submit"]' ) );
+			hideProcessingPaymentScreen();
+		};
+
+		onCheckoutPlaceOrderCriticalError( container, () => refreshCheckout( activeCheckoutForm ) );
 	}
 
 	iframeReady( iframe, handleIframeReady, () => {
@@ -468,6 +496,7 @@ domReady( () => {
 			// Append product data info to the modal, so we can grab it for GA4 events outside of the iframe.
 			document.getElementById( 'newspack_modal_checkout' ).setAttribute( 'data-checkout', JSON.stringify( checkoutData ) );
 		}
+		activeCheckoutForm = form;
 	};
 
 	/**
diff --git a/src/modal-checkout/utils.js b/src/modal-checkout/utils.js
index d94794f38..e36a470e4 100644
--- a/src/modal-checkout/utils.js
+++ b/src/modal-checkout/utils.js
@@ -180,16 +180,16 @@ export function onCheckoutPlaceOrderStart( container, callback ) {
 }
 
 /**
- * Run a callback when the checkout place order succeeds.
+ * Run a callback when the checkout place order is processing.
  *
  * @param {Object}   container The container element inside the iframe document.
- * @param {Function} callback  The callback to execute when the checkout place order succeeds.
+ * @param {Function} callback  The callback to execute when the checkout place order is processing.
  */
-export function onCheckoutPlaceOrderSuccess( container, callback ) {
-	if ( container.checkoutPlaceOrderSuccess ) {
+export function onCheckoutPlaceOrderProcessing( container, callback ) {
+	if ( container.checkoutPlaceOrderProcessing ) {
 		callback();
 	} else {
-		container.addEventListener( 'checkout-place-order-success', callback );
+		container.addEventListener( 'checkout-place-order-processing', callback );
 	}
 }
 
@@ -207,6 +207,20 @@ export function onCheckoutPlaceOrderError( container, callback ) {
 	}
 }
 
+/**
+ * Run a callback when the checkout place order fails in an unrecoverable state.
+ *
+ * @param {Object}   container The container element inside the iframe document.
+ * @param {Function} callback  The callback to execute when the checkout place order fails in an unrecoverable state.
+ */
+export function onCheckoutPlaceOrderCriticalError( container, callback ) {
+	if ( container.checkoutPlaceOrderCriticalError ) {
+		callback();
+	} else {
+		container.addEventListener( 'checkout-place-order-critical-error', callback );
+	}
+}
+
 /**
  * Run a callback when the checkout is complete.
  *