Hello. I’ve used the generator and selected the vertical menu option, but when I add it into the plugin area on my site it doesn’t produce a vertical menu like I saw in one of the demo/portfolio sites.
It told you there was an option for it as a premium option, not for free. If you try to use it without signing up for premium access it will do nothing.
In future versions it will tell you that feature isn’t available if you try to use it. But in the mean time, there is just a comment that you can’t access it for free.