Can't login to admin area.

[Vinsar]

Installed the script without any issues or warning.

Tried login to admin area, captcha got generated (reload captcha feature s missing), submitted required details, but login fails, no warnings, back to login page.

Password reset process works as intended, no issues there.

running on a cPanel server with Apache 2.4, PHP 7.3 (tested with PHP 5.6 too), MariaDB 10.3.23

Below are some errors that got logged

PHP 5.6 & 7.3 errors
[08-Jul-2020 00:56:46 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106

PHP 7.4 errors
[08-Jul-2020 01:30:50 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:30:50 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:30:59 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:30:59 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:30:59 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:31:10 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:10 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:23 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:23 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:23 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:31:30 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:30 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:30 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:31:31 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:31 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:35 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:35 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:35 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:31:36 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:36 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:36 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:31:37 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:37 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:52 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:52 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:31:52 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:31:54 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:31:54 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:06 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:06 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:06 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:32:10 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:10 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:10 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:32:10 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:10 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:10 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:32:19 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:19 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:36 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:36 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:36 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:32:38 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:38 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:53 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:53 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45
[08-Jul-2020 01:32:53 UTC] PHP Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/myuser/qengine/includes/function.php on line 106
[08-Jul-2020 01:32:54 UTC] PHP Deprecated: Array and string offset access syntax with curly braces is deprecated in /home/myuser/qengine/includes/function.php on line 3366
[08-Jul-2020 01:32:54 UTC] PHP Deprecated: Function get_magic_quotes_gpc() is deprecated in /home/myuser/qengine/includes/init.php on line 45