How to use:
Home -> Menu ->Settings -> Display -> Wallpaper -> Live Wallpaper. Next Wallpaper change as follows : the newly created shortcut -> a tick against one option. You might need a few seconds to change the Wallpaper on the desktop.
On advertising : advertising installation.
Uninstalled as soon as I read their T&Cs. Even if you don't agree to them they still collect data about you.