Nostalrius Begins - Quality wow vanilla realm (1.12)

just made an account and installed the game now every time I write my username and password in it sais I have done it incorrectly but I haven't, what am I supposed to do?

Greetings nature1996,

Have you tried the solutions put forth in the sticky threads in support? Confirm that your login is working by logging into the main site: https://en.nostalrius.org/login

Regards,
GM Team