The Mail app keeps complaining about the password being wrong.
I suspect the problem is that in Settings / Accounts I need to use the app password because I use 2FA. However, in the Mail app I have to give the real password.
Somehow, the /e/OS account manager seems to overwrite the real password with the app password. If I modify the app password in settings to the real password, the Mail works fine, but calendar and contacts do not synch.
Any ideas how to work around this problem without disabling 2FA?