Hi @Neil_Lavitt,
Thanks for writing in! I split off your replies into their own post for proper visibility. And for better troubleshooting, we’ll need to better understand your network setup:
Networking Gear & Setup Details
Your network gear (model of routers/switches) and if on WiFi/Ethernet
Are you able to share the error code you see in your Roon Settings>Arc
Here is more info that you may find helpful in regards to the Dream Machine: