Back to Account Linking Question
I wonder if simply linking your main to Facebook would override the alt account's link. If that doesn't work (thinking it won't), try signing into your alt and unlinking it from Facebook - then go to your main account and link it.
I wonder if simply linking your main to Facebook would override the alt account's link. If that doesn't work (thinking it won't), try signing into your alt and unlinking it from Facebook - then go to your main account and link it.