Endpoints missing after Roon update

LUMIN P1 and Marantz MODEL 40N endpoints are missing.
Roon tested (AppleTV and Sony TVs) show up.
Any ideas? Thanks — Gary

Disable Firewall.

Reboot the whole network of devices, starting from the router, WiFi access points, mesh, network switches, Roon Server, and all Roon endpoints.

Success! Thank you, Peter.