Problem with trying to play online

Hi, I am trying to play this game online after not having had internet for a while but now everytime I progress to the main menu after the title screen they automatically set me to local and only other option I'm permitted is system link. Whenever I attempt
the online fuction it keeps giving me an alert regarding something about my Privacy and Profile settings but there isn't any issue there I can come to realise especially since this is the ONLY game that is giving me this issue. My profile and data was left
on a friend's xbox for the duration of which I was offline and once I was back online again I downloaded my profile and data back off the cloud storage but when I played Gears 3 again I saw that my medals were much higher than should've been possible and shortly
thereafter is when I was unable to play it online any longer. In the meantime I have lost my profile data and have downloaded my much older saves again so it's back to normal except for the fact that I still cannot play online. My friend may have done modding
on his profile before which I am unsure of but I expressly let him know not to tamper with my profile. If anything can fix this problem please help!

:)

 

trying to play online

I tried playing cod black ops2 and when i load the gaem and go to multiplayer and go into xbox live the game tells me im not allowed. Anyone know reasons for this?

 

trying to play online

Do you have a gold account?