I just tried connecting an Ethernet cable and I see LEDs on both the switch and the WLL. There is activity.
I tried scanning with Angry IP, but I only see one address. The other "alive" hosts are all accounted for.
I re-scanned after disconnecting the Ethernet cable and still only see the same WeatherLinkLIVE.local address (MAC Vendor is Expressif), so that was the only one showing with the cable connected. I don't know if there is a good WiFi connection if there is a way to change back to Ethernet.
After the disconnect and subsequent re-connect, the LEDs are now off on both the switch and WLL. I looked at the WLL manual and you choose between WiFi and Ethernet. Maybe once you have selected WiFi, you can't go back as long as it is active? I can't see any way to change this. I looked at the app on my phone and I don't see anything there.
The fact that it did seem to be working as far as the activity LEDs are concerned, would indicate that this is a one-shot deal. At least I know that it isn't a hardware problem since it did apparently work while initially connected.
I have not raised a ticket at Davis. I might though to see if there is a way to revert to Ethernet if needed.
Greg H.