It is the second AX1500 router that I bought (I returned the first), and I still having the same issue. When I connect the ethernet cable to the WAN port, the router says it is disconnected. However, if I plug the same ethernet cable on the old router I have here, it immediately works just fine. I live in a condo and there is an ethernet jack on the wall which I use to plug in the old router. I also bought a new ethernet cable cat6 to try it out with the AX1500, and still not working.
If I plug the router to the ethernet port on my laptop, an orange light comes up on the router. Also, if I plug the AX1500 on my old router, AX1500 gets an external IP and works just fine.
What is the problem then?