Nostalrius Begins - Quality wow vanilla realm (1.12)

Recently a friend recommended me to this, so I created a new account, installed the game, and all that.

In game I cannot seem to login as it says my login information is incorrect. How do I fix this?

Greetings Guittarplayer,

Is it possible that you created a forum account and try to login with the same credentials to Nostalrius Begins?

Make sure you create an ingame account at the following site: https://en.nostalrius.org/