1. For U.S. users, Google has opened the Alternative Billing option: you must register for the program in Play Console and submit a compliance declaration before using a third-party payment method. 2. Even when using a third-party payment processor, you must keep Google Play Billing available as an option for users. 3. Subscription cancellation policies must be clear and transparent - hidden or silent automatic renewal is not allowed. 4. Display all price options clearly on the subscription page, including prices in different currencies. 5. In the EU, the subscription cancellation flow must take no more than 3 steps. 6. Before the user completes the purchase, clearly disclose the subscription price, billing period, and terms to stay compliant with the subscriptions policy.