@Lespadon That sounds like the problems people have had with EasyMesh routers that didn't support EasyMesh Ethernet backhaul. So the AX55 V1 is running firmware verison 1.3.2 and the C80 has firmware...

@Lespadon Hi, It should switch to Ethernet backhaul automatically after an Ethernet cable has been connected between the two routers. Is the connection made via a straight cable or is the connection...

@KillerTyzon Does the Archer AX3000 boot normal when the modem is not connected to it? If yes, then log into the Archer AX3000 without the modem connected to change the IP address or perform a reset...

@KillerTyzon Hi, Could you please post a screenshot of where exactly you are seeing "xxx.xxx.10.x" ? Normally it should be possible to modify IP addresses manually, without the need of a reset.

https://www.tp-link.com/en/support/faq/304/

@Pete999 It used to be quite simple about 10 years ago. I remember IP cameras of the time would have an internal webserver that could be reached by setting up port forwarding on the router. When the...