I'm a new member, and I'm attempting to connect with a Cataclysm client. Realmlist is set to logon.warmane.com, and I deleted my cache. I also waited a couple of hours after starting my account to attempt logging in.

When I try to log in with the same password and user name as the website, I get an error message that says:

The information you have entered is not valid. Please check the spelling of the account name and password. If you need help in retrieving a lost or stolen password and account, see [https://www.wow-europe.com/login-support] for more information.
I have tried the same client on a different server, and it worked fine (with the appropriate realmlist change), but here it does not and I can't figure out why.