Stability with Rossini

HI, really like Audrivana but have struggled for months to keep it stable. Quite regularly Audrivana does not see the Rossini UPnP?

trouble shot with everyone in the chain. It’s the only program that I have trouble with. Roon, Tidal, Qobuz and whatever all work fine including other UPnP devices.
Mac mini is running the Studio app. Audrivana is going up for my renewal in a couple of weeks and I am hoping I can get it right or sadly I will have to let the subscription expire. Any thoughts or suggestions are appreciated

:notes: :eye: :headphones: :eye: :notes: