Help me I'm banned from asking questions. I had done all the things as mention in 'How can I get out of a question ban?' but still no luck.
It's possible that your account was auto-flagged by the system and the time limit has expired. Sometimes if the system notices a trend of poorly received questions or a trend of removed (deleted) questions/answers it will prevent the user from continuing this trend for a certain period of time. Eventually it will becomes unlocked, you just have to wait it out.