I bought X-Plane 11 after playing the demo and I used the Installer for Windows, which it recognized that I have the demo installed and it continued to use that installation to add more files to it. At one point past the typing of the Key and such, I was able to select additional scenery so I selected the United States and it downloaded it and I was able to fly to other areas instead of just the Seattle area. But after that I wanted to add Canada, Mexico and central america scenery files but I couldn't find an option for it within the game, so I had to run the installer again and it asked me for the key once (already typed for me) and I was able to select the additional scenery I wanted.
Is that the proper way to add scenery? Cuz it feels like I'm doing a new installation and I don't want to have any "key/activation" related problems. Or am I missing an option for it in-game?