So i downloaded the new Public Test Realm for 4.3 (EU) and now i get onto it, and i see that i just REFUSES too say my password is correct? i mean i just went and logged into battle.net and that uses the exact same infomation world of warcraft does. So im just REALLY confused on what i've done wrong? because this is getting annoying. i changed my password and everything, tried to log in about 10 times. and it just wouldn't work, i don't know if anyone can help me with this but if they can i'd really appreciate it.

If you are having trouble logging in to the Public Test Realm client, try using a password that you used previously. The password that the PTR client uses is from an older version of the live client. So if you have changed your password in the last few months, try using your old password. If that does not work, then you might want to go to the official forums and ask on there.