We tried to add a new video on our latest app update but it won't get saved even though iTunes connect confirms the video as okay.
Our last update (previous to our current one!) required a 2 months long submission process because of Apples twisted app preview video upload system. We got that app rejected multiple times because the system didn't accept our new videos even though it confirmed the uploads as being valid, saving them with no error messages. Apple Reviewers didn't see our updated video but old, outdated videos that we deleted long ago. Thus we got rejected over and over.
After we wasted those two months with Apples App Preview system we gave up and decided to remove all videos and go without the App Preview. The submission got accepted instantly.
Weirdly enough after some weeks our new video clips magically appeared on the App Store presentation page no matter that we deleted them to get the app approved.
Well, new app update, still same problems after all those months. We upload a video. iTunes Connect says the video is okay, allows us to select a poster frame, we can tick through the frames, then iTunes Connect enables the save button. We press the save button, the page reloads, the video is gone.
Is there really no way to uploaded App Previews without going through a world of pain? Do we have to submit it with a deleted video and hope it will magically reappear like last time?
EDIT: It seems that just saving the page (without uploading a video - for example after a plain text update) also deletes the existing videos.
EDIT 2: https://forums.developer.apple.com/thread/23006Looks this is a multiple years old issue that Apple is not able to fix or support. Might the best to not use an App Preview in that case.