Hi,
The actual continuing of this post was in this thread https://forums.nomachine.com/topic/forwarding-ipad-connected-to-local-windows-to-macos-server
In your case, you can try a few things.
1. If possible connect from your Win client to any other remote machine to be sure that it’s not Windows related issue.
2. Check, do you see on NM Menu -> Devices -> Connect a USB device, USB devices from both machines?
3. To be sure that USB forwarding module works well on the remote (Mac) side please connect to Mac via NM, open NM Menu -> Devices -> Connect a USB device, after USB devices from both machines will appear, close NM menu (but not session) and open Terminal on Mac, run this command kextstat | grep com.nomachine and send output here.