I had got banned around a week ago for one question which had got downvoted a lot. I had expressed my displeasure at that ban in a previous post on this site. The main issue with the downvoted question is that I hadn't meant to post it (it got posted by accident, or due to a glitch idk) and I didn't get the notification that the question was incomplete until I got banned, and so, didn't get a chance to edit it. Regardless, I got my ban lifted yesterday, so I asked a question and now I've been banned again. Now, the question that I asked after having my ban lifted had three upvotes, so not really 'terribly received'. So either the ban is a glitch or I've been banned twice for the same question. I really have no idea what's going on here
Mods don't have full access to the internal workings of the autoban system but I think this is because your first question was so heavily downvoted that your current aggregate question score is still negative. I can't undo the ban but I threw another upvote in there for you.
If you keep asking good questions and they continue to be well-received, this won't happen anymore.