Greg,
I went through a similar thing, installed the demo, and had some type of connectivity issue. I don't recall _exactly_ what it was, but the application would not actually control the unit. I did end up purchasing the software, and though it took a bit to get it going, it does work well for me.
I'm on Windows 10, connected via USB. I also use the Soundtower VST via midi in Cubase.
-Michael