I'm having trouble with Facebook.
I'm getting this error message
I did not change my game at all, it was working 1 week or 2 weeks ago...
Develop games in your browser. Powerful, performant & highly capable.
Facebook are notorious for breaking their API regularly. Wait a couple of days and try again. If it worked then broke without you doing anything, that means it's almost certainly Facebook's fault, and not a Construct 2 bug.