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.
That's the only way I'm afraid. You can buy them as boosters of course, but that doesn't count. You just need to create them manually as you said, by lining up 5 same color candies