Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello. 6 March i flew out of Crossroads in Thender Bluff, i veered the game. After a while i opened the game and saw that i was thrown out of the game world. I try to log back in and now get "This World of Warcraft account has been closed and is no longer available for use. Pleas go to ....".

Please help me with this problem.

how do you know that the anticheat automatically banned you? could have been a manual ban for another reason.

I looked similar topics in the forum and saw the same problems from other players. and what I could do if I just ban flew from one location to another?