Sometimes it takes up to 24 hours for a purchase to arrive. Please make sure that your Internet connection is stable. Try restarting the game a couple of times and rebooting your device.
If that didn’t help, please send us a screenshot of the payment receipt, and we’ll sort it out!

You are supposed to get an email with each of your receipts. If you can't find it:

Open iTunes.
1) If you’re not signed in, sign in with your Apple ID.
2) From the menu bar at the top of your computer screen or at the top of the iTunes window, choose Account > View My Account.
3) On the Account Information page scroll down to Purchase History. To the right of Most Recent Purchase, click See All. It might take a moment for your Purchase History to appear.
4) To see the details of a purchase, click the arrow to the left of the order date. Your most recent purchases are first.