AirPort Extreme no longer part of my network
I have AirPort Extreme 802.11ac. Airpot Utility now shows a yellow caution Triangle and says my"AP Ext. was previously part of my network. Device is missing from your network." Green light is still on, indicating we still have wi-fi connection. Our wireless devices still work. How do I get it to list our devices again? 2 changes happened in a short
period: I downloaded Apples latest security patch to all devices. We set up a new Smart TV connecting to Internet through AP Extreme wi-fi. Could either of these affect? How do we reset?
iMac, OS X El Capitan (10.11.4), Airport Extreme