You can make in-game purchases by tapping your current diamond balance, then selecting the pack or offer you wish to buy.
After that, tap the pack's price to choose your preferred payment method and complete the purchase.

Payment Methods:

1- In-game through both Apple (iTunes) and Google by using the following options:
- Credit cards linked to your account in Apple or Google.
- Prepaid cards for both Apple and Google.
- Direct recharging from your phone credit. This attribute is available on both Apple and Android devices, but is unavailable in some countries. (Please get in touch with Apple or Android teams to know if this feature is available in your country.)
- PayPal, as this method is available for both Apple and Android, but unfortunately, it is unavailable in some countries.
(Please get in touch with Apple or Android teams to know if this feature is available in your country.)
 
2. For other payment methods, you can press the following link to check them:
https://playbabil.com/