This site is being deprecated.
Please see the official X‑Plane Support page for help.
To my understanding, you can "unlock" the DEMO so there is no time constraint, and either now, or maybe on official release, you will then be able to install the global scenery. You can try. I am no affiliated with Laminar Research so I don't know exactly how they planned it. :-)
This site is no longer being actively maintained.