Client as a Service - use device error

Hello,
i'm evaluating VirtualHere, everything works perfectly with Windows client running.
My real interest is to use it as a service, i followed instructions and installed it without any problem but i cannot have my device working!
If i type vhui64.exe -t "USE,AddressOfTheDevice" after some seconds it just says error
Tryed to use AUTO USE DEVICE and an asterisc (*) appears correctly on the left of the device but it doesn't work and if i use DEVICE INFO on that device says me that noone is using it.
What i'm doin wrong??
Thank you!
Emiliano