Not pleased

Half the time this app does not work. Running iOS 10.10.1, on Macbook Pro Retina, with latest updates. When I drag a window to a corner, or the top, or wherever, nothing happens. If I drag it to the right, the window will change desktops, but that is not a Moom feature, but rather a Mac OS feature. Very very frustrating considering how much I paid for it.

Mehtod about Moom Classic