The range of payment methods available is limited and determined by app stores (Google Play and App Store). Unfortunately, we cannot change it and add a new payment method.
All payments are made via Google and Apple services only. If someone offers you to buy a game or a digital product without using these services, we shall not be held liable for its quality and the way your devices will work. We strongly recommend that you make all payments only via official stores (Android - Google Play, iOS - App Store).