Nostalrius Begins - Quality wow vanilla realm (1.12)

Hi,

After i logged in the first time an choosed the Server i got disconnected.
Now i cant log in anymore ("Disconnected from Server")
My gameversion is at 1.12.1 and the Realmlist is changed to "set realmlist login.nostalrius.org"
Can somebody help me with my Problem ?

mfG Arnuslol

read the sticky threads up above.