I had the same registration problem that others are reporting, that the activation window wasn’t registering the software.
To overcome this I found that if I clicked on ‘Cancel’ in the bottom right hand corner of the activation window then the program would open. When open I clicked on the ‘Information’ tab, which then shows an activation button at the far right of the various options. When I clicked on this the giveaway registration information was shown in the appropriate fields, and then clicking the ‘Activate’ button resulted in a message saying the registration was successful. The program now opens properly without any trial message or activation window. I also found that I needed to do this for each user profile on the computer.
I hope this helps someone.