I just made one screen shot with Pixelmator for the required size and added it for the iPhone 8 screen shot. From my understanding iPhone 8 is not supported with iOS 17 so that size screen shot shouldn't be needed for an iOS app that require iOS 17 as a minimum. I have successfully submitted an app to the App Store 3 times now. Also, I am not sure that the current submission process requires the iPhone 8 screen size. I left mine in and it seems to be happy with it. However, I did put a note in the App Review notes to mention the placeholder screen shot added for the iPhone 8.

I just did an upload to try to see if the problem is still there. The upload WORKED! Thank you Apple Support for looking into it and fixing it so quickly.

I'm experiencing the same problem. It is seeing the Mac App portion but not the iOS portion.

Thank you @crystalminds for the working example. It helps a lot.

I had the same problem. In my case simply recreating the JSON Web Token (JWT) solved the problem. You can use the maps.developer.apple.com developer 'Create a Token' to recreate the token(s). I would guess that your token expired.