• It is best to start with checking if there are any restrictions on the device. You can check your restriction options by going to Settings > Screen Time > Contact & Privacy Restrictions > iTunes & App Store Purchases > In-app Purchases. If you want to make a purchase, you should allow In-app Purchases on this screen.
  For more information, you can check out the following link: Prevent in-app purchases from the App Store
• Your internet connection should be stable in order to make purchases. It is suggested that you use Wi-Fi or at least a 3G/4G/LTE connection while purchasing coins.
• There might be temporary problems with the store where the game was downloaded from. All in-app purchases are made through the App Store and there is a chance that the store is not able to respond to in-app purchases.There might be temporary problems with the store. You can also restart your device and try again.
• Your payment information might be incorrect and that’s why you are not able to complete in-app purchases.
• There is a chance that the payment method you are using is not accepted by the store. To see available payment methods in store:
  • Available payment methods in Google Play Store
  • Available payment methods in App Store

If you are still unable to make a purchase, please contact us.