Unable to print to Dymo LabelWriter 4XL or Zebra ZP 450

I added your package to my Synology in the hopes that this would be a simple way of sharing these printers. I was using other USB sharing solutions, which seemed to stop working after a software update, and was hoping this would be a quick way to get this functionality back again... apparently not :-(

I'm on a Windows 10 client with the latest client software connecting to my Synology NAS. I can see the hub, and the two devices are in the list. I can connect to the Dymo LabelWriter, and Windows sees it and adds the printer, but I'm unable to print to it without an error. For the Zebra, I can connect to it, but nothing happens.. Windows wont see the device. They DO both show up in Device Manager under the VirtualHere USB 3 eXtensible Host Controller, but searching for printers shows nothing for the Zebra.

I've tried running as a service, but since I'm on a trial, I cant do that.

I've tried to enable reverse connections, and allowed through Windows Firewall, but that didnt help either.

I'm not sure why Windows can see and attempt to print to the Dymo, but then fail... and I dont know why it doesnt seem to see the Zebra at all (other than in Device Manager attached to the USB Host Controller).

How can I troubleshoot this further?