You are not able to attach a ThinPrint Port to a printer queue on a machine with OS Win2012+.
Microsoft does not support third-party port monitors in the type v4 driver model or with print class drivers.
Applies to product
ThinPrint Engine 10+
ThnPrint RDP Engine 10+
Type v3 drivers are still supported with the latest windows OS. Install a native driver type 3 and then attach the ThinPrint port.