So you eventually were able to log in right? Because you're giving us feedback, so there was obviously something wrong with what you were doing. If this glitch wouldn't let you log in, you'd be stuck.
Maybe you were temporarily banned and you did not know about it? I don't think that is the case though. It is probably a glitch on the site, or you just forgot your password.
SOmetimes the site has "down time," when nothing seems to be working quite right, but it eventually fixes itself. I believe it happened sometime around 1am last night if by any chance that was the same time you were trying to log in.