So we can better assist you, please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
This should be resolved now. You might need to restart your Core and restart Roon on your remote devices, but after that things should be working for you. If you’re still running into any issues please let us know!