There can be different reasons why you are not able to make an In-App purchase.
Here are the most common solutions:
If you do not see a price, or see a wrong one, it might be because the game is not able to connect to the store. In that case:
- Check that your device has a stable internet connection
- Go to your device's ‘Settings’ and make sure the 'Date & Time' settings are correct (preferably set it to 'Automatic')
You need to have a valid payment method in Google Play or App Store.
If the solutions above don’t help, you can look for a solution here: