This could be caused by a child account (age 15 or under) being signed into the console (even if it is not the actively used profile) or ""Allow User-Generated Content"" is disabled in the console's settings.
I would try signing out of any other accounts and checking this setting.
If this does not work, you would need to contact the game's developers here; https://support.saber.games/hc/en-us/categories/6056441571345-SnowRunner
Hope this helps!