Did you mean your router model is AX10 ?

@Kevin_Z OK, tested with different ethernet cables (CAT5e/6) few times - it persists. When I've connected my laptop (by cable to the same LAN2 port), then it was OK. When laptop is shutdown the...

Just make sure that the SSIDs on 2.4GHz and 5GHz network are different (on your main router).

OK, nowadays the majority of IoT devices are 2.4GHz only capable. That doesn't mean that you have to disable 5GHz band on your main router. You just have to connect your Maxico Smart Switch to the...

I can see the login dialog of your Netgear DGN1000, but not the login dialog of the C80. It seems that the only thing you can do is to wait for a new FW release.

Do you have any other equipment between your ISP and C80 (i.e. ADSL/cable modem, firewall, etc...) ? You can try a higher port (like 60080 for ex.).