Dolphin Bar/Wiimote -> Nvidia Shield to Gaming Laptop. License Free Set Up?

I am attempting to connect a Dolphin Mayflash Bar that is plugged into my Nvidia Shield to my PC that I connect to via Gamestream to play emulated Wii Games.
I followed this tutorial and had initial success: https://forums.launchbox-app.com/topic/48096-can-dolphin-bar-for-wii-wo…

I downloaded the VirtualHere USB Server for Android, The VH Client for Windows, reversed clients, and was able to connect.

This worked three times and is now asking that I purchase a license. However I understand it is possible to have a single USB connection sustained without a license, and the need for a license was not mentioned by people who have had success in the thread linked to above.

I am just wondering what I am doing wrong and if anyone could help? The only other thing I can think of is that I have a USB external hard drive connected to the Shield, although I have not given Virtual Here permission to access it.

Thanks!