You need to be sure you've got the
Ez-Architect 9 demo (and not the version 4 or 5 or 6 or 7 or 8 demo) before purchasing the keys. Ez-Architect's Help menu, the About selection, tells the version number.
Here is where Ez-Architect 4 or 5 or 6 or 7 or 8 owners can UPGRADE to Ez-Architect 9.