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.
Its good to see you ask something you already know @ipete. But yes for the concern of the player who asked the query. The energy carries no significance at all if you don't have these features in your game. You can't use them in normal levels.