Model : RE580D Hardware Version : Firmware Version : 171220 ISP : My RE580D range extender no longer connects to the 5gz band of my router...My router is the archer VR900V. I can't pinpoint the date t

After hours of testing i can not connect to any 5ghz Network. Status always says 5ghz: "No Signal" I tried switching channels 36, 40, 100 I tried disabling security The 5ghz Led only lights up on rebo