@ToddTrimble the issue is I don't have a posts that are "sufficiently down-voted" (even if they are, there is no way to improve as they are quite old), I had one problematic post which have been deleted by SE, and it seems that "system remembers" those down-votes, In that case I can do nothing, this is a deadlock situation, and none of the posts you attached discusses this issue.

@Jim I'm sorry, but since I am unable to identify you as an MO user, I don't see how I can help you at the moment. Perhaps if you could give me your MO user account number or link to your account page I might be able to tell more. If you can't do that, then I don't know what more to say, except try to reach SE Community Management to discuss your issue.

@ToddTrimble my belief is that this site MathOverflow, and I believe that also Math Stack Exchange should implement a period, after which a ban can be relaxed or modulated (notice that I've known (is just my view) this scenario in both sites, I refer third persons, in this site for professional mathematicians and, in my opinion, for new contributios in Math Stack Exchange).

@user142929 You're really talking to the wrong person here. I have nothing to do with ban durations, and I am also an ordinary user at Math.SE. This is an issue at the SE level.

I understand that you are saying @ToddTrimble . Now understand you that an user maybe can be banned to ask questions, maybe just a few questions, and maybe if we evoke that this third person wants to ask in this community again. My view/opinion is that isn't the same thing ask in the mentioned sites that if one asks in oher SE sites (it is just my feeling).

@user142929 I don't understand your English, but as I say you are talking to the wrong person, and to be brutally honest, I don't have time right now to "chat" about your opinions while dealing with the COVID-19 situation requires so much immediate and urgent attention. So please don't ping me further unless it has something to do with your account.