AppStore did not accept app submission due to older SDK version. This was built by eas service which still uses older xcode version 13. Xcode version needs to be updated to the latest one.
ITMS-90725: SDK Version Issue - This app was built with the iOS 15.0 SDK. Starting April 2023, all iOS apps submitted to the App Store must be built with the iOS 16.1 SDK or later, included in Xcode 14.1 or later.
After you’ve corrected the issues, you can upload a new binary to App Store Connect.