The ban is automatic, there's little (if anything) we can do to help, you should (carefully) read and follow the advice given in What can I do when getting “Sorry, we are no longer accepting questions/answers from this account”?.
Keep in mind that deleted questions do factor in the post ban, and you have three of them (10K+ links):
The first one is the one that probably triggered the ban, as it's your most recent question. I can't see any way of improving any of the three, unfortunately, and undeleting them might get you more downvotes.
You should concentrate on giving great answers to others' questions, although the exact algorithm of the question ban is kept secret, great answers will certainly help. But please don't just rush to post answers, only answer questions that are well within your expertise and you can provide very thorough and well researched answers to.