The same issues are happening for me too. App Store preview screenshots and subscription product review screenshots are simply not uploading. Subscription review screenshots are stuck on 'processing' and then will fail after navigating off the screen (even after waiting for a considerable amount of time for it to process - 10s of minutes). I have tried everything I could find: making sure the resolutions are correct trying different suggested resolutions that don't require a specific device resolution making sure the DPI is set to 72 renaming the files to have only numbers + letters renaming the file extensions to be uppercase probably some other things I'm forgetting This is the first upload for this particular submission, doubt that should have anything to do with it though..