Is there any way to get the Activation to remain in effect from one session/day to another? (I am running on Windows 10)

I installed and activated DraftSight on a Win 10 system. I used it a little that day, just trying to familiarize myself with the UI. 3 days later when I tried to open DraftSight it said I needed to activate it in order to use. I found the email I originally activated it with but the link had apparently expired. Eventually I uninstalled DraftSight and reinstalled. Having gone through the hoops to activate again I used it to import some drawings I had done in another program. I made some adjustments - which worked well - and printed the drawings - also worked well. I played with the UI a little, drawing a couple of simple objects just to try to get familiar with the system. I really like the functionality and interface.

Two days later I attempted to run DraftSight again and it is back to the Activation Required instructions. Is there any way to get the Activation to remain in effect from one session/day to another?