My control point can't see MinimServer - after a while

[MarcelZ]

I disabled the daisy chain topology. I have only one satellite, so it wasn't doing anything for me anyway. However, this didn't solve the problem.

Then I reset the ORBI to factory default settings, and went through the setup process from start. Seemed like a good thing to do, since I went through several firmware updates since I bought it. Then I disabled the daisy chain topology again. Now the IP address of the NAS appears in the UPnP Portmap Table on the ORBI (two entries for port 80 and 5000 respectively). This table was empty in the past. The renderer and the control point still don't appear on the UPnP Portmap Table.

The Portmap Table was a hopeful sign. But unfortunately, MinimServer is still magically disappearing from the control point, and restarting MinimServer brings it back.

Do you have any other suggestions?