So what has happened in the meantime.
I restored my account as suggested ie automatically. The result is generally OK, but a Reset Password was needed. Everything went well with that too. But I would like to note that before the restore I wasn't able to log in to Plesk, but was able log in using ftp using the same old password.
After updating the password, I can access Plesk with the new password, but I can still use new password with ftp, there I must log in with the old password. However, I can't with the new one.
When I check the password in the Plesk panel, I see there the old password.
So now I need three different passwords, one to log into Plesk, the second to use ftp and a third one to use the forum. At the same time I see on Plesk only my old password, not the new one. Maybe it changes after some time when cache is cleaned up. Don't know.
Too much, isn't it? Also, I haven't tested the email yet, so I don't know what password it can be used with.
The post is just to let you know what the problem is still there.