Last fall I bought X-Plane 10. Every now and then it asks for the serial code on start-up, displaying a window with the serial code already filled in. I click on 'unlock x-plane' and everything is ok. Since a few days, however, the code is not filled in, and when I fill it in manually it is not recognized, so that I can only run the demo. What could be the matter? Do I have to re-install X-Plane? My PC runs on Windows 10.
Kind regards
Dirk Schellaars