Hi @Martin_Cohn,
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.
Just to verify here, the only issues is with wirelessly connected endpoints not showing in Roon, correct? Are devices connected via Ethernet visible? Are remote devices able to control Roon like normal?