We're aware of an issue with Facebook purchases for all King Games and our team is on it. 🛠️ Hang tight while we fix things! You can still enjoy the game, and we'll keep you posted once it's solved.
Just to add to the pile, since the qualifier I have not seen a single Mastery point for anything. Probably all part of the same bugs that are affecting a bunch of other stuff but was curious to see if anyone else was not getting them.