Password suddenly stopped working and now I get "Your account access appears to be restricted", why?

Petruza

First I got an error as if I entered my password incorrectly when I wasn't.
Then when trying to reset it, I got "Your account access appears to be restricted".
Why can't you tell me that when trying to login instead?
And let me know why it is restricted, I can't login so I can't get phone or chat support.