Hey so I think I've got Krita version 3.1.1 and I have it on my surface pro. I've never really used it before but I can't get my surface pro pen to draw at all. I have no idea what to do because all the tools work when I use my fingers but nothing happens when I use my pen. Please help!

The thing to do is to use the most recent version, 4.2.7.1 and make sure you select the Windows 8 Pointer API option in the tablet settings.