Failing to join a server.

Hi guys,
Ive been trying to log on all morning and its not working, ive chcked to see if the servers are down in the information tab but I still see thousands of people playing, is there something which ive done wrong? Ive downloaded the client through the website as well as checking that the realmlist.wtf is as it should be. When i log on i don't use an email but rather the account that i made with you guys (ive both used the forum and the account username one and it still doesnt work) got any advice? Im from Australia are we restricted from accessing your servers?