Product key number didn't list on the down load

Question

I downloaded X-plane11. the format never asked for the product key. Where do I enter it. I need to know where to enter the product key number

Answer 1

X-Plane will only ask for your key if you do not already have a valid DRM key saved on your hard drive. If you do not have DRM on file, the installer should ask when you try to install scenery. The sim should ask at launch.