I noticed that my 2 plat ones in the bedroom were flashing last night at about 3.30am (mosquito kept  me up). This morning my surround setup of beam + 2 one SLs isn’t working. The beam is connected to the TV via HDMI and is OK, but the surrounds cannot even be seen by the app (Android & up to date). I have rebooted and reset everything - the app finds the surrounds with support>find missing products and adds them as a stereo pair, but when I try and add them as surround I get an error.

What can I do? Everything was fine yesterday - there were no power outages and my network & WiFi all work fine with various devices.