That's not the right program - you want this: https://www.stardock.com/products/tweak7/purchase.asp

The trial may have expired immediately because you tried a previous version of TweakVista or Tweak7. At the time, I believe the same trial detection key was used. A future trial should use a different key.

Right now, only Object Desktop subscribers can download the beta of the full version of Tweak7. This should change shortly, and a new trial will be released at the same time.