Ok, this is baffling morning, my iPad had about 5.3 GB of space on it. Before I left, I set it up as a video camera recording out my upstairs Window to see if I could possibly capture the delivery of my new 128 GB Piano Black iPhone 7 PLUS being delivered by UPS on the outside chance that they delivered it. When I got home at lunch, the video was mo longer recording. It had captured about 42 minutes. Storage showed only about 70 MB remaining. The phone hadn't been delivered. I deleted the video, thinking it would give me back that 5 GB of space. But it only went from 70 MB to 90 MB. I have reset the iPad twice, to no avail. Any ideas how to get my 5 GB back?