@AliShowkat Check this configuration guide and see what router models this guide applies to - thus you'll find the models that have this imlemented.

@magriff99 First check the VR2100 ethernet status and make sure that your cable connections negotiated speed is 1000 mbps: If everything's correct in VR2100 LAN section go to the wireless settings...

@AliShowkat Not every router model has this feature implemented. Archer C20 v5 doesn't seem to have this implemented. Archer C20 v6 does have wireless schedule implemented.

@knownoname It seems what you're describing as a goal is the Easy Mesh with Ethernet Backhaul itself. If you unplug the cable of one or both AX55, Easymesh should switch/revert to a wireless backhaul...

@BunzZz What's your main router LAN IP address and what's the WR840n LAN IP address ? In general these LAN settings should work out of the box.

@Abhi2704 You can always search for a third party FW but I doubt that.