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.
It could be that the game being saved onto the SD card is the issue. Have you tried moving the app to the device memory? Try this and let me know if it changes things. I tried that, but the game will not open.