1, same problem here. After updating to 880 (and between the constant DB rebuilds and server crashes), I have no end points for my Mac clients or RoonBridge devices (RasPi 4 running RoonBridge and Ropieee). Strangely they show up as active audio devices in Setting but they aren’t available to stream:
As mentioned in this thread – 880 Constant Server Reboot on Synology 218+ – I can get the RoonBridge devices back by rebooting the Pi devices but only for a minute until Roon crashes again.
Some endpoints are coming back without issue after a Server crash: Google, Cambridge 851N, and HifiBerryOS.