Thanks. Unfortunately, the permission is checked for the app, but he still gets the error message when he tries to save the video.Go into Settings and find the Lego Movie Maker app, Tap it, Tap Photos, and set to Add Photos Only or Read and Write (which ever is there).
Then go back to the Lego Movie Maker app and save the movie.
Another idea is to get an HDMI adapter for the iPad Air (make sure it works for your version) and play the video to an HDMI capture card and record it. Saving with the system that contains the card.
- Does it keep the video if you kill the app in some other storage? If so, then kill the app, remove camera permission, add camera permissions, open the app then export. That might work.
- Being an old app (2012) it may know about iCloud but not Files. Can it save to iCloud? Even if it could save the unexported video there that would be good. Then find an older device that is on iOS 6 or 7 probably up to 9 would work, open the iCloud save and export with that.