@Cassiopeia23 Yes, you can do that only with Easymesh supported devices (routers also have to supports an ethernet backhaul). Follow this suggestion of mine and check if that works for you. The OP...

@dmmm05 AFAIK the online detection has been done via a name resolution. You can set a public DNS on your router (like 1.1.1.1 and 8.8.8.8) and observe the Deco behavior.

@Mikecini To reset the RE, press the reset button for about 10 seconds. If you even can't reset the device and it's in kind of a boot loop, most probably it went faulty.

@Icarus36521 This most probably won't work for you because when you configure the RE, you have to provide the host network password (in you case is different because of the captive portal).

@deluxxxe That's correct - here's the full user guide for configuring USB storage device access.

@PMarci Well, you don't have much of a choice here. I would set it to 20/40/80MHz. Probably the idea here is the router itself to decide what width to choose according to the intereference, something...