Hi @zzk812,
Thanks for reachi8ng out to ask about this. The question that @Carl asked is a good start. If you remote device is on the same LAN as your server next check to see if they are on the same subnet. You can do that by looking at the devices listed in your router’s settings. Identify the server and your remote device and compare their IP addresses. To illustrate with an example if your Roon server had an IP address of 12.3.4.56 and your remote device had an IP address of 12.3.4.78 they would be on the same subnet since the 4 is the same on both. If they had different numbers in that position that would mean they are on different subnets.