Does AX10 V2 running latest 1.3.10 Build 20240130 support wired (Ethernet Backhaul) for easymesh network? I am planning to install a second router in a room on the first floor which has ethernet cable

Archer A5 wan gets disconnected after reboot. But it gets restored only when I plug out the cable from WAN port and put it back in. My ISP uses PPPoE. My query is whether this is a router issue or wir