Incorrect username or passwort. Please, Sign In again.

Eduard Seifert fa 10 anys updated by nimbusweb fa 10 anys 3
Error message: Incorrect username or password. Please, Sign In again.
Password changed: 2-3 times
FF: 26

Thx for help.
Hmm, please try to restore your password - https://everhelper.me/client/restore
Tried this a few times. Didn't help. What to try next? Delete account and create a new one?