Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey!
Just logged into my account and was about to start to lvl my 48 warlock. Char name is Loserena.
Then suddenly the server goes offline for me and my friends in skype. Then when i try do log in again it says that my account is closed and no longer available for use.
How the is this possible??
Same thing happend to my irl mate few weeks ago.
This is totaly bullshit. Spending shitloads of time and having fun playing on this server. Then account gets closed?
Something has to be very wrong

Greetings,

your account isn't banned.

Best regards.

Hmm why cant i logging then?
Still says that account is closed when i'm trying to login

It means you entered a wrong password too many time.
Wait 5 minutes and try again with the right password please.

Okej thansk for help! Have a nice day