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?

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.