All payments are processed by the Apple App Store or Google Play Store. To update your payment information,
On an iOS device:
- Go to iPhone Settings
- Tap Your name Apple id, iCloud, Media & Purchases
- Tap Payment & Shipping
- Update your payment info here
On an Android Device:
- Open the Google Play Store app.
- Tap the profile icon in the top right.
- Tap Payments & subscriptions
- Tap Payment methods
- Tap Add payment method
- Update your payment info here.