Same here in 2023; it's been more than a week since uploading, and it's stuck in processing. No error message or other clues to solve.
Andrew3F0
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I'm having the same problem and have done some research to find this document.
https://developer.apple.com/documentation/storekit/in-app_purchase/original_api_for_in-app_purchase/persisting_a_purchase.
Does that mean for non-consumable products we have to manage their receipts manually?