Link rate light will not light - Netgear Router Range extender WN3000R

"Can you plug-in your system via the Ethernet port and see any network? Looking for a running system locally (workgroup - peer). You may want to set this up first on a known good network before trying.

What does the happens when you try accessing the extender's router [https://kb.netgear.com/25504/How-do-I-re...|How do I reconnect my NETGEAR WiFi range extender to my home network?| are you able to access the router configuration?

Did you swap out one of your WiFi devices to a newer unit (upstream unit) or upgrade its firmware?"