khaoztopsy

Could you double check that you haven't used a url for the example that only you can see? There is a large cyan box on the home page with nothing in it. Looking in the dev tools I see an image that goes to previews.dropbox.com/... if I go directly to it I get a 401 error page

Don't worry you are not alone, I got an app update rejected because the reviewer did not like one of my iPad screenshots. The iPad screenshot they were upset about was multiple months old and I had been pushing weekly updates without issues.

The human element of the reviews is in my opinion the weakest part of Apple's reviews, most of the time they don't catch rule breakers and just reject based on silly 'issues' for some sort of power trip. The Google Play Store review is the other extreme, its super easy to push something broken to production