Nostalrius Begins - Quality wow vanilla realm (1.12)

Hi support team,

I am unable to log in:
Username: bankaiftw

If i clean up my WFT folder I can log in, but when I select Realm Nostalrius Begins I get disconnected.
I created a another "test" account this morning and I can log in with that account no problem.

Not really sure what to do or if it can be fixed.

If I have indeed been banned, I honestly have no idea why?

Thanks in advance,