For Blocks Usage Refer This: [Paid] 
Razorpay Payment Gateway Extension | Added UPI Payment Support 27-Aug-2026 | In-app Payment Billing - Extensions - MIT App Inventor Community
Demo Video:
Tested In All Android Versions
Trial Extension:
com.razorpay.extension.razorpaypro.aix (31.3 KB)
Price $15 OR INR 1000
Click Here To Purchase OR Indian Devs Contact For UPI