Well, I don’t know if the mod is really the cause of the problem. People experiencing problems with the mod say that the problems they have are related to things happening once they are into the game (in my case is that I can not open the game, just show me the MS Store window).
I have fixed the problem in the past using MediaCreationTool21H2 (it reinstall/repair Windows 10), but the fix last only for a day, and the next day I have again the same problem.
I have deleted the host file, and it does not fix the problem.
I said here the problem could be related to the use in the past of the mod, because that was what said to me Flight Simulator discord community-support. But If I should bet, I bet the problem is related to MS Store itself.
Maybe a should uninstall MSFS 2020 not in the normal way, but deleting some hidden files too? (normally programs leave some traces in the system even after uninstalling them).
I have met some people in different forums that have installed the same mod, just for curiosity like me, to test and compare, and they do not experience this problem. Maybe the don’t have the problem because they bought the Steam version of this sim? Maybe because the mod is not the reason of the problem?
Looking for the cause of this error is like looking for a needle in a haystack (I have tried everything in the past months). I appreciate the interest and tips from people in all this time, but none work.