Telios doesn't seem to work with DDG Email Protection

[Dyras]

Description

For whatever reason, if you set your forwarding address in DuckDuckGo Email Protection to your Telios account, no emails are ever delivered to it.

Steps to reproduce

0. Sign up for DDG Email Protection, I believe it can only be done in the DuckDuckGo app
1. Use a Telios alias, or your main Telios email as your forwarding address, it doesn't matter
2. Go on another account, I used Gmail, and send an email to a DDG alias
3. Notice it's not ever arriving in your inbox. I literally went to bed and it wasn't there in the morning. I also pressed "Sync" several times, both before going to bed and afterwards.
4. Switch your forwarding address to Tutanota
5. Send another email from Gmail to the same alias
6. Notice it arriving in seconds

Environment details

Windows 10 64-bit Education
Latest Telios Version at the time of writing

Expected behavior

The emails should deliver, as expected