I found myself in that position and tried again, but, the delay might just be thousands of people all getting 10 before it runs out. Although the barometer is not moving, is the HD doing much? And also, Task Manager might give a clue as to what's going on.
I'm tempted to get another one, but didn't buy another SSD so am thinking of installing on a spare laptop drive and changing later. Not sure what the swapping-drives thing will be after the 29th.
I wish I had purchased another drive as I see the Pro version costs a lot.