Roon Core Machine Intel Nuc running ROCK Server Software Version 2.0 (build 1128) production Operating System Version 1.0 (build 227) stable Networking Gear & Setup Details BT Smart Hub as modem (wifi switched off) wired to Netgear Orbi Mesh System. ROCK and QNAP NAS are wired to the Orbi m…

Problem solved. I had to turn off Port forwarding on the Orbi router and turn it on at the BT Hub. Set the Port forwarding to the Orbi address and used the Roon Core port numbers.