Amazon Fire TV Audio Streaming App

I have already posted this a month ago, no one bothered to respond to my PMs. "Have you designed an actual Fire TV App...can I see it?" I had no replies, just spam....so I am reposting:

I run a live audio station that already streams on Roku and I charge listeners $0.99 per month. It’s time to give the same experience to Amazon users, so I need a standalone Fire TV app—audio-only, no video—that mirrors the current Roku offering.

The app must open with a simple email-and-password login, handle a recurring monthly subscription, and rely on Amazon’s native in-app purchasing flow for all payments. I will supply the full set of approved graphics (icons, splash screens, banner art) as well as the existing stream URL and metadata feed the moment we kick off.

What I need from you:
• A production-ready FireTV APK that passes Amazon Appstore review.
• Seamless integration of Amazon IAP for a $0.99/month plan.
• Basic account screens: sign-up/login, subscription status, forgot-password.
• Continuous background audio playback with media controls on the remote.
• Clear build instructions and source code so I can submit future updates.

Let me know your estimated timeline and any additional assets you might need.

If you HAVE NOT already designed a working Amazon Fire TV app, please do not respond.