Several players encountered a similar error, but with reason=3 'BAN'. It appears tied to King of the Hill mod servers, and that ban/whitelist is managed by the mod authors rather than the game settings.
(https://steamcommunity.com/app/1874880/discussions/geometry dash/1/7845908402039765903/)
I’d recommend trying to log in with a different Xbox account to see if the ban/vote-out is profile-specific.