Nostalrius Begins - Quality wow vanilla realm (1.12)

Trying to logg on, and all goes well and when its supposed to connect i get disconnected from server.
The server name is Test Realm 1sVV2. i was on and then switch to that server and got DC and now im stuck on that server...

there is a tool available in the beginner's guide.
also changing your realmlist.wtf to add the realmname works

SET Realmname "Nostalrius Begins"