I couldn't use my key to unlock. I purchased it anyway. However, having major problems. I can start it, but when I try and use 1024 x 768 mode, it jumps to a tine square in the middle of the screen - it doesn't scale up. Tried a lot of solutions, including projecting to a second screen when I reduced my Surface Pro res to 1024 x 768. Still didn't work. Going nuts.