The Bitwarden extension allows integration of a SimpleLogin API Key to automatically generate email addresses. In testing, Orion with both the Chrome and Firefox Bitwarden extension give an error:

I have tested the following:
- Bitwarden desktop
- Bitwarden Chrome on a Chromium browser
- Bitwarden Firefox on Firefox
- Bitwarden Safari
In these cases, a generated API key works as expected. The issue appears to be isolated to Orion specifically.
If there's some means of helping you troubleshoot this, please let me know.