[@Adrian]
Sounds similar to the experience I had. Installed and activated okay, license seemed to stay active, however even though it was listed in the startup settings to load on Windows start it would not work unless I manually ran the software every single time I started the PC.
But, no matter how many times you uncheck to TURN OFF AUTOMATIC UPDATE CHECKS, each time you run the software it rechecks it, so turning that function off to maintain a lifetime license may not work. So, my point being, how can someone be sure that it wont auto update and lose the license when it wont effectively allow you to uncheck the auto update check function.
From what little I used the software it did seem to make things a little more zippier, but it appears that it changes settings for the hard drive speed so perhaps that is something someone with a few tweaks could do on their own.