Dear wrty, did you mean editing the IAP AFTER uploading the build and BEFORE the submit to review? or editing the IAP after uploading the build and AFTER the submit to review. I have the same issue after 5 rejections, the In-app purchase items are showing well with me but not with the App Review team (but I didn't try your solution yet this is why I want to understand your fixing)!

Dear "rich", I am facing exactlly the same situation, with 6 rejections for the same reason, could you help, please?

exactly the same situation, 6 rejections till now: you can follow my continuous experience on this new thread: https://developer.apple.com/forums/thread/688377

Thank you ownmas for your comment. For me, I did'nt check the receipt, the problem (on the APP Review side and not on my side) appears when my app fetchs the list of my in-app items with SKProductsRequest (in order to display the in-app items with the prices), they receive an empty valide answer in the function : func productsRequest(_ request: SKProductsRequest, didReceive response: SKProductsResponse), i.e. response.products.count == 0.

Totally agree with RandyD and zixtix, I am in the same situation with 7 rejections for -probably- the same reason :-(

Another interesting post in my desperate search: here (the link between Apple Review team and the Apple SDK developer team should be strengthened than ever before)