I think you answered your own question.
Remove any files from the Community folder. Move them to say C:\TEMP_Community when MSFS is NOT running.
Re-boot and try again…
If that does not fix it… then its NOT something that was in the community folder, and you have other UNKNOWN issues… so maybe a re-install as a last resort.
If you are going to Uninstall, and re-install, I suggest you wait till tomorrow (10/28/2020) till after todays Patch #5.