I have discovered something odd about file management. If I download an image file from the Internet to view in Leia player, then I delete the file in Leia player, the file apparently does go away. However,if I use the Google Files app to examine the Downloads folder, the file still seems to be there, but I can’t open it or delete it. And it seems to be taking up storage space. I found lots of files like this on my LumePad. The only way I could I could get rid of them was to do a factory reset.
I’m not sure if the problem is similar, but I was unable to delete some image files and other folders from my Lume Pad. I finally got there, but only by erasing them from my PC …
I followed your approach and that worked for me, too. Thanks!