Nostalrius Begins - Quality wow vanilla realm (1.12)

I was playing before the server restart without a problem (roughly 20 minutes ago) then the server restart happened and now I get the message "This World of Warcraft account has been closed and is no longer available for use Please go to http://www.wow-europe.com/en/misc/banned.html for further information." Any idea or reason this happened? Account name: ClayDud. Thanks

This account does not have a ban on it.