Unable to access account

Character: Aprija
Realm: Nostalrius PvP
I get immediate disconnect when I type in my account name + password. I do not play on this account regularly since it is one for my alt. What I can say is that I can access my other account from the very same wow installment and it works fine. Ofcause I tryed to delete WTF / WDB but it changed nothing.
Since I didn't log in the account for some time I don't know how long this problem is there.
Also if the account got banned, I would like to know why and if not, if you got any advice what else I can try.
best regards
Realm: Nostalrius PvP
I get immediate disconnect when I type in my account name + password. I do not play on this account regularly since it is one for my alt. What I can say is that I can access my other account from the very same wow installment and it works fine. Ofcause I tryed to delete WTF / WDB but it changed nothing.
Since I didn't log in the account for some time I don't know how long this problem is there.
Also if the account got banned, I would like to know why and if not, if you got any advice what else I can try.
best regards