Guideline 2.3.3 - Performance - Accurate Metadata Your screenshots do not sufficiently show your app in use. Specifically, your iPad Pro (2nd Gen) and iPad Pro (6th Gen) screenshots show an iPhone device frame.

If I trust what's explained here: https://www.sommo.io/blog/app-screenshots-for-the-apple-app-store-sizes-requirements-best-practices

Apple is strict about how the screenshots are taken. It allows app developers to use images or videos captured directly from within the app. In other words, you can’t submit screenshots taken from an external camera or those not originally shown in the app.

Your screenshots are not real screenshots, but images containing screenshots. That may be the issue.

Or the issue is that the bezels don’t match any iPad device. The aspect ratio for both is longer than any known iPad so it does sort of look like an iPhone. The one for iPad Pro (2nd generation) is way off: that model has a thick top bezel and square corners, as shown in the tab thumbnail above it. The iPad Pro (6th generation) has thin bezels and round corners so it matches a little better, but note one of your shots has both square and round corners.

Your best bet is to regenerate all these screenshots using the correct simulator, and include the device bezels when capturing the screenshots.