I've purchased version 1.0 in the Mac App Store. How can I upgrade to version 2? Where do I enter the license code?

Why does my mouse need at least three buttons to use Gesture Puck? How can I use another mouse button for opening the puck?

Some Spacious functions don't seem to work. I have the Logitech Control Center installed. Spacious does not work in particular situations, like f.ex. when I'm working in a virtual machine or playing a game. How can I launch Spacious automatically after login? Where can I find the preferences of Spacious?