Integro does not show up as a UPnP device anymore

Hi there,
I have an Integro and am quite pleased with the sound and the capabilities of it. My music library is stored on an sd card plugged into the Integro’s sd card slot. Everything works fine with the Volumio software but the integro does not show up as a UPnP device in the Audirvana software that I prefer over Volumio. The Integro has a static IP address and is connected to my router via a network cable. My router allows UPnP and the Integro’s settings are hopefully set accordingly. Both, “UPNP Renderer” and “DLNA Browser” are active. Is there anything else I have to think about? The Integro’s settings are not very easy to understand for someone who is not a network technician.

Thanks a lot!