Hi - I saw a previous post about not being about to delete mobile creations. I'm having this problem too, but mine is a little different.
When I log in via the web, I have 3 mobile creations that I can't delete, move or copy. When I try to do anything with them, I get the error message "Could not delete 1 item".
Interestly, the files don't show up in the Creative Cloud iPad app or any of the apps that created the files. Two files are Photoshop Sketch files, and the other is an Adobe Comp file. I tried to convert the Sketch files to Fresco via the option on the web, but that fails.