I just experienced this issue, and actually got useful help from the help desk via telephone. They believe that the failure to "remember" the prior activation was related to a dynamic IP address (who would guess that a software activation would depend on a specific IP address! Seems like a bug to me: what if I take my laptop to my friend's house and connect to their WiFi? That should not force a re-activation of my purchased software on my laptop, in my opinion). In any case, my ISP does provide me with a fixed IP, but my home network uses DHCP for the private IP address of my computer. I changed my network to give my computer the same IP address all the time (via a DHCP reservation on the router), and it appears to have solved my issue, at least for the first 2 restarts of the application. Only time will tell if the fix sticks, but it was encouraging enough that I thought I would post my experience here. If I feel adventurous, I will change my local IP and see if that breaks the current activation...
