At the moment, all Chinese trackers have been taking trumendous pressure by the Chinese authorities.
They have to get whitelisted by the Chinese Internet agency, otherwise all domestic ISPs are going to shut them out.
So, until the websites solve their problem, all members need to pay attention to this:
Don't log out or delete your cookies, or else you won't be able to login again. It would be best if you backed up those cookies just in case.