message saying I'm not allowed to play multiplayer

I’m receiving the message "MULTIPLAYER IS NOT ALLOWED

The Multiplayer feature is blocked due to your Xbox LIVE settings. Please make sure you have the correct Xbox LIVE account and your Family Settings are turned off."

I did both of these things and I’m unrestricted for everything. I tried logging in and logging back out of my account, nothing. Any tips?

You haven’t figured out by now that 343 doesn’t want people playing Halo?