Do you both have any problems with any of the other games or any other apps connecting to Facebook? Not that I've encountered yet. Facebook works fine in itself & I can use it to log in at forums like this one & other sites. I don't actually use it for any other games that use an app so can't say with regards to other apps…
Hi, yeah I feel like I've tried everything! My version of Candy Crush is 1.56.1 & my Facebook app version is 34.0 I'm using an iPad mini running iOS8.4 (says it's up to date) if that makes any difference whatsoever to things. Thanks!