Google Play

Google Play App Signing: Build and Self Distribute Production APK (Upload App Signing Key)
Android Play Billing Library Testing

Setup Test Account for in-app purchase and subscription

Android All Firebase Libraries Must Be Above or Below 14
Google Play Receive Payment Methods for Malaysia Bank
Google Play Start Rollout Button Is Disabled
Google Play Billing: Publisher Purchase in Release App (Redeem Promotion Code)

The publisher cannot purchase this item

Enable Google Play Review Notification
Google Play Merchant Account