I recently bought many Stardock SW via HumbleBundle. I installed FENCES and after reboot, each time I log in to windows, I am receiving following pop-up. It is in CZECH but I believe you all know that. UAC is asking whether I approve Fences to make changes on my computer. The solution above does not apply to me as I can start FENCES from start menu with this UAC pop-up. It happens only on system startup. At least for now.
Sorry to hear you are having issues. If understand your issue correctly, you were asked to allow Fences to make changers to your system everytime you startup your computer.
I believe that Fences need to be allow to start (twice) and stay in the background to function.
Stardock Community Assistant.