It looks like a good portion of your answers (more than half!) were deleted by moderators because they weren't really "answers" by the definition of the word. They were replies, or comments, that didn't seek to answer the question at hand but to seek clarification on matters that were possibly relevant. That is the most likely reason for your answer ban.
From the FAQ:
Answers that do not fundamentally answer the question may be removed. This includes answers that are …
- commentary on the question or other answers
- asking another, different question
- “thanks!” or “me too!” responses
- exact duplicates of other answers
- barely more than a link to an external site
- not even a partial answer to the actual question
If you wish to improve an existing answer, click edit. For additional guidance, see How to Answer.
To be fair, a number of them were from a few months to more than a year ago. However there isn't a whole lot you can do at this point, save from participating in other ways to make your presence known and, hopefully, receive votes on your other actual answers that would possibly restore question-answering privileges to your account. Nobody knows the exact numbers required, and I wasn't yet a moderator myself for much of the time your account was around, so I can't comment on this myself.
For more information about the automatic ban, see What can I do when getting "We are no longer accepting questions/answers from this account"?.