How do your other devices get an IP address from that router ?
Through DHCP, I suppose ?
Default AX Lite will get DHCP on its WAN port (ether1 but be careful the marking on the white case is NOT very clear so easy to get the wrong port. I put on purpose a marker on my device to make it visible. Been there, done that.).
All other devices connecting to AX Lite will then get IP from AX Lite.
they get the ip from the AX, in a different dhcp range from the ISP router (and i tried to shutdown the latter).
i connected via wifi a smartphone, a notebook and a tablet, and a tv and a minipc on the wire; all these devices get a correct ip (i can ping) but they can't see the ISP router.
on the AX the ether1 is marked "internet", so i can't plug the cables in the wrong way.
i tried to reset configuration, but no changes.
furthermore, sometimes after i do the login on the mik, i get a "void" page.