Up to now, I was surprised that I reset my password just now by a changing password email sent to me, and I can release a topic in the form, though I still CAN NOT log in in the game.
WHAT IS THE PROBLEM!?
IT SAID THAT I SHOULD UPGRADE MY PROFILE WHICH I DID.
I've seen many guys that released problems and errors topics in the form which talks about the similar problem as my problem.