Hi, I tried uploading 20 images at once, and got a lot of these errors:
Don't have very fast upload speed (0.5 mbit/s) so I assume error 0 is timeout. If that's the case is there any chance you can add checkbox option "Upload one at the time" to prevent uploading more than one picture at the time. In the end I managed to upload everything, but it took me like 10 minutes since I needed to manually drag and drop every one of them, upload and then repeat the procedure.
Thanks!