SE hasn't released any information on how exactly the process works, but we know that it takes negative scored, zero scored and deleted questions and answers in consideration.
Out of 44 answers you have 3 with a positive score and 3 accepts. Out of 13 questions you have 1 with a positive score. You need to prove to the system that you can ask good questions and post googood answers, consistently.
If you are willing to put some continued effort into it, you should not find it hard to lift the ban.
Good luck and keep going!