How do you add an existing object to the layout? If you tap and drag nothing happens, if you double tap you edit the sprite, if you tap and hold you edit the object.
The same goes for the sprite screen, I can't see any other frames just the first one. The frame screen in behind the main editing screen.
[Update]
After so trial and error, I finally went to Menu -> Settings and changed the view to desktop on my tablet. With the desktop view I am able to drag and drop objects and see the frames window in sprite editing.