Help! Painter touch commands stopped working!

Hello there! first post btw :)

I've been using this program for a couple months and I'm pretty happy with it so far. I'm cintiq 24HDT user, so I decided to upgrade and buy a second monitor to display the navigator and whatever reference images I need, but after installing it the touch commands like pinching to zoom or rotate stopped working and now it only lets me pan the canvas with two fingers. I had similar troubles in the past, but restarting the tablet service driver, or painter itself (or both) fixed the issue.

Since I've been searching around the web and I didnt find people with this or a similar trouble, I suppose that I'm missing some hotkey or some interface button that I pressed by mistake, but cant figure it out...

Any ideas?