Nostalrius Begins - Quality wow vanilla realm (1.12)

So, I installed wow, registered, got the realmlist and all that finilized. And then once I launched the client and typed in all the credentials and such it just said that "Disconnected from the server". After a million tries trying to find a way, I gave up. I thought that if the community can't, well...
So what can i do in such a case?

p.s. this is my realmlist

realmlist login.nostalrius.org
Realmname "Nostalrius Begins"

also it tried to write the word 'set' before the realmlist and realmname.