You're in AQ and not Sandbox. So I would check with the hotel if they will allow you to apply the new rules. Usually the conditions you entered in are applied.
The validity of the visa means you have to enter Thailand before it expires. You will then be stamped in for 60 days, which you can extend once for 30 days.
also, usually if there is a problem with your application, they would tell you when you apply, so once you're under consideration, it's pretty much a done deal. To note is that the Covid extension starts from the day you apply. Not from the end of your previous extension.