It’s saying there’s parental controls on my game so I can’t play it when I’m 20 years old and I haven’t put parental controls on
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If its the platform error saying you must have access to multiplayer, like this one https://i.imgur.com/KMXDpTp.png, then restarting the game/your console will usually fix it as long as Xbox services isn't having issues. If you're on PS also make sure you don't have Guests etc signed in.