sometimes you have to wait a while before their actually active, try again in about 30-mins to and hour. Also make sure your logging on to the correct server.
what i usually have to do is re-load the client in order for them to work. And make sure you are using caps where they belong, the game is case-sensitive, I think
now I finally got logged into my old account (2008) and it said to change my password, I did and it says illegal activity detected, account has been banned wtf their code monkeys are fools