I have this router/controller that's acting very flaky, show up for a second on my Omada cloud console, but then if I click to open it, it says "Controller disconnected". It's been doing that for days.

What's strange is although it's *seen* as coming up online, the console never shows the WAN IP address. And when I get the app notification on my phone, it says "ER7212PC is up" instead of the custom name "1375 Lafontaine I've given it (why would be the expected behaviour, as per all the other controllers I have).

Also, if I access the controller directly (laptop plugged into the LAN side, accessing https://192.168.0.1/ then no problem.


 

Troubleshooting already done:

- Changed WAN port on device, changed LAN port on device, changed cable. Note that I have sucessfully configured many other controllers on that same router port and with that same cable.
- Factory reset the router (yes leaving it turned off for more than 30 minutes), then "re-adopting" it into Omada. No change.

- Power and Cloud lights are solid green, cloud is slow-blinking

- There are no firewalling rules upstream preventing communication with Omada cloud (as mentionned, I've configured many other controllers in this exact same lab, without any changes to its topology).

Please advise. This unit is due for deployment next week, if it's defective/flaky I need a replacement ASAP.