I host my web app on Firebase and have already wired it up to RazorPay. Everything works until the very last step—the final payment page never appears on the live site. Once that is solved, I also need a simple flow where anyone who buys a subscription can immediately log in with the same credentials and access the paid-only sections. The job is essentially two parts: • Debug and publish the RazorPay checkout page • After a successful charge, flag the user as “subscribed” in Firestore so Firebase Auth recognises them on subsequent logins and grants access to the protected content. I’ll share repo access and Firebase console permissions right after we start. Please be comfortable reading deployment logs, tweaking Firebase Functions or rewiring client-side callbacks if needed. A brief note on what was fixed and the key lines changed will be enough for documentation.