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.
You have to disable notifications for the App at the android level. See this movie how it is done:http://www.cnet.com/how-to/how-to-turn-off-notifications-for-an-app-in-android-4-1-jelly-bean/