Hi,

I have bought this new router instead of my old one. 

When I connected Internet cable to WAN (blue) port in the router, then after a little time it said "WAN port is unplugged" and led status is "Orange". Then I thought it must be an ISP issue and I put the cable in my old router, everything worked fine. Also everything worked fine when I plugged the cable directly to my PC.

Then I tried to clone old router MAC address - still nothing.

Then I tried to connect my new router WAN port with old router LAN port and then everything worked perfectly(Internet led was Green). It looks like WAN port is working.

What can I else try to do? Or it's a warranty case?

Thanks,
Nick