When adding an e-mail address, Codeberg requires you to confirm ownership of said e-mail address. You should have received an email from noreply [at] codeberg [dot] org with further instructions.
After you've verified (or after some cache expires?), you'll be able to add more e-mail addresses if you wish to do so.
The primary email was activated it seems, closing.
Not sure what issue actually was, but confirm - now it works as expected, finally was able to change email address to desired one.
No due date set.
No dependencies set.
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?