Nostalrius Begins - Quality wow vanilla realm (1.12)

I try to log in and get a message saying " The information you have entered is not valid. I made a 2nd account and still comes up with the same info.

please check the following thread for more information :
viewtopic.php?f=2&t=1860

as a first make sure you activated your account with the email you should have received ( in the junk email folder ?)