I'm developing non public app that have to hit App Store under "Private — Available as a custom app on Apple Business Manager or Apple School Manager" distribution method available only by my client's company. My app has failed review due to review on iPhone which never been tested for and UI is not fit iPhone. I don't have neither real need nor budget to tailor app to all other IOS device except iPad pro 12.9" 6th gen. How can I restrict app only for my target device to pass the review?