Solved! Go to solution
IF you're trying to do this in the MW3 options then try it on the Elite site instead :
- Log in to your Call of Duty ELITE account (www.callofduty.com/elite).
- Left click on "My Account" on the bar at the top right.
- Select "Profile".
- Left click on the Plus sign next to "Link your Facebook Account".
- Allow Facebook access to your ELITE account.
Think the best thing to do is contact Activision support.
Sign-in to the Elite site then select support (top left corner)
You'll then be brought to the Activision support site, select Live Chat