What you're seeing in the filmstrip are the tiny thumbnail copies of the original image files present in the image cache in the GO4 flight app - the digital equivalent to an old photographic contact sheet, very low resolution and technically...
I checked the storage capacity and there was about 4GB taken up. So I bit the bullet and used Disk Drill and all the files were on there and recoverable as full size DNG's. Even the test picture I took at my desk today. But they would not show on...
Problem?
When the drone is running, I can press the button for the image gallery and see all 184 of my DNG files from today through about 6pm. When I remove the SD card and plug it into my card reader, it looks as though I stopped taking pictures...