If you did not received your purchase it could help to restart the game. When you still haven't received your purchase please contact our customer service and include your Google or Apple receipt.

https://www.google.com/wallet/

https://payments.google.com/

Just sign in with the same Google Account you have purchased the game with. You will see a list of all your purchases made with that account.
Find the right order and click at the link. You will see your receipt.

Apple iTunes - Apple App Store
https://finance-app.itunes.apple.com/

Just sign in with the same Apple Account you've used to purchase the game or chips.

And find the right order. Click receipt and you will see your invoice.

Or you can follow the steps at this page: https://support.apple.com/en-us/HT204088