WAN port connection won't connect
Spending too many days on this, I'll ask: AirPort Utility indicates that it cannot find my AirPort Extreme devise. I have ethernet connection from router connected to computer to WAN port on Airport Extreme, and Airport Utility rescans to death and can't find my AirPort Extreme. When I remove ethernet from WAN port in AirPort Extreme and plug it into ethernet port, AirPort Utility finds it but I'm prompted to connect to WAN port which disconnects me and I'm off and running in circles. Why doesn't the Airport Utility discover my Airport Extreme when I'm connected to the WAN port? Does it have something to do with me connected to router and not cable modem?
Thanks in advance for any help. I've read most of these discussions and none refer to my WAN port issue.