@Boji Do you have any ISP devoce in your network ? Try this troubleshooting guide. After a successful configuration the router can be accessed by its IP address (http://router_IP_address) - here's...

@Averell PLC adapters can't work as a router.

@LiBabae If you can set your 4G router in bridge mode then a router like Archer AX53 or Archer AX20 will cover your ground and 1-st floor. If you can't set your 4G router in bridge mode these models...

@s1n1st3r s1n1st3r wrote Quersion to TP-link representatives: will the EasyMesh be added to AX1500 in AP mode? Actually the post: " That "EasyMesh in AP mode"-thing is only important for the "Main"...

@s1n1st3r Following the logic that for using an ethernet backhaul, both devices should support it, I would say yes - both devices should be AX55, but this has to be confirmed by a TP-Link...

@s1n1st3r To achieve this you have to use Archer AX55 router since AFAIK it's the only model supporting Easymesh in AP mode so far. Otherwise you'll get a double NAT after the main Easymesh router...