Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello!
I've downloaded TBC client, registered on tbc website, fixed the realmlist, but when i'm trying to log in - it says "The information you have entered is not valid.... blablabla". Please, help me

Try a different client or following a guide to fix the client you're using. It's probably something like the Hellground one, which is modified to force connections to its server.

Thanks!