Yet again, a bug arises that is completely detrimental to the submission of apps. Apple immediately rejects the binary of iOS builds, as they use the wrong iOS SDK. There has been a very short window where we have finally been able to submit apps to Apple for review to try and resolve issues. This project is way overdue, and now we're left completely embarrassed in front of a client yet again.
The issue below is what apple reports:
ERROR ITMS-90725: "SDK Version Issue. This app was built with the iOS 14.5 SDK. All iOS apps submitted to the App Store must be built with the iOS 15 SDK or later, included in Xcode 13 or later."