Automated bans cannot be removed from your account by a moderator or Stack Exchange employee.
You do not appear to have been manually banned, nor suspended, by a moderator.
Therefore, the only way to post new questions again is to fix the ones you have already asked to get more upvotes/attention.
Your non-deleted questions:
- Did WIndows 10 just delete Windows.Old? -- is a decent question. It seems to be suffering from the symptom of "nobody cares about this question enough to upvote it".
- From beginner, extend coverage with router or extenders? -- also a pretty decent question; the diagram is helpful to anyone seeking to produce an answer. Unfortunately, the scope of your question is huge; probably too huge for a Q&A. You're saying "Here's my problem; solve it for me", instead of saying "Here's my problem; here's what I've tried (or investigated) already; how can I bridge the gap?". Since you haven't shown any research effort of your own, that's a sign that the question needs to be improved (specifically, narrow down ideas such as whether you are absolutely married to having Wi-Fi or if you can live with Ethernet; for example, if you have mobile devices like an iPad that need to get on the network, that would be a convincing argument against only using Ethernet, at least in some rooms.)
- Knowing if router is actually working as bridge? -- is kind of an "X/Y problem" (you asked for X, but you actually needed to ask Y), as the upvoted answer suggests. So this question needs a lot of work.
- https://superuser.com/a/1143322/144607 -- a very "localized" question (everything about it is specific to some two particular products), which used to be a valid close vote reason on Super User. I don't see anything particularly wrong with it, but again, this isn't going to easily attract upvotes since it's such an edge case of your particular situation.
- Can Wi-Fi router pick up signal wirelessly, similar to extender? -- Seems okay. A good, generally useful piece of information is provided in the answer to clear up your question. Others might have the same question, google it, and find your question -- this is the hallmark of a good question, as others might find it useful in the future.
- LAN cable for connecting modem to router? -- Also okay, as indicated by the +1 score.
- Install VPN software Arris/Motorola svg6582 modem? -- I upvoted this one when I answered it, so obviously I don't think it's a terrible question.
I can't see your deleted questions, but since many of them seem to be downvoted, that's more the reason why you've been question banned. Your +0 questions don't really count against you, but in a few cases there are ways you could improve them to get upvotes. In other cases, the fact that your questions are so specific (and in some cases, with so little research effort on your part) will tend to keep them from getting upvotes.
And no, I won't go and upvote all your questions that I think are useful, because that would bias the process, and would be construed by the system as serial upvoting.