Both, unfortunately @Shield101 All lights have gone off and some even flashed in a few reset tries.Regarding the IP- is there any fix? I can reach the router only with "Tether"- but it won't let me...

Model : Archer C5400 / AC5400 Wireless Tri-Band MU-MIMO Gigabit Router Hardware Version : 2.0 Firmware Version : no way to access and see. I can not reach the login page via IP, IPV6, or the default...