Your question was simply off topic for Super User and has now been migrated to Web ApplicationsWeb Applications.
Looking at your previous questions, I don't see a convincing reason to prevent you from posting. You do have two out of nine questions marked as duplicates, now one of them closed and one migrated. However, I don't see terribly low quality questions there.
Note that the question ban is automated and we can't just change this for you. I undeleted one of your questions which currently has one down vote. Maybe you can fix it and clarify it a little, and that'd help you get back on track. Posting good and useful answers also always helps.
If after that you're still unable to post questions on Super User, do let us know.