My app has been rejected 3 times now for In app purchasing content violation:
Your app makes digital content available for purchase inside the app, charges end users to use the app or its content, or facilitates non-Amazon account creation. Therefore, to be made available on the Amazon Appstore, it must use Amazon’s In-App Purchasing API (or other methods we make available to you) to process payment for such content, and may not facilitate or direct customers to use any other payment method (including hyperlinks or QR code) for Content intended to be used within your Mobile App. The Amazon In-App Purchasing API makes it easy for you to offer digital content --such as in-game currency, expansion packs, upgrades, magazine subscriptions, and more--for purchase within your apps. It's easy to integrate and cost-effective to get up and running quickly, and our 1-Click purchase experience is simple, secure, and trusted and can increase conversion rates for purchases within your app.
I think this is a misunderstanding because my app involves no purchasing internally or externally. It is a display app for NFTs on the blockchain. It uses ETH adressess to locate content, and uses qr codes for users to verify official blockchain records. This app is just a viewer for the publicly accesible blockchain.
I have submitted multiple contact us requests over the last few weeks and haven't had a single reply.