My app keeps getting rejected because of Guideline 2.1 -Performance - App Completeness. "We found that your in-app purchase products exhibited one or more bugs when reviewed on iPad running iOS 15.6.1 on Wi-Fi. Specifically, your app still did not produce further action when we tapped on the “Buy” feature. We are unable to provide further information regarding our review environment." I found that this was caused by SKProductsRequest returning 0 products and returns the productIdentifiers as invalidProductIdentifers. I have tested the IAPs on multiple devices and simulators running different iOS versions and they all work perfectly. I replied to App Review with a screen recording of the IAPs working on an iPhone running iOS 15.6.1 and they replied with: "While we appreciate that your app is intended primarily for use on iPhone, in order to bring your app into compliance with App Store guidelines, all apps designed for use on iPhone must still be formatted correctly and behave properly when running on iPad." I am not sure what the problem seems to be here.