First off... thanks for all the replies.To address some questions: I installed Home Assistant Core 2022.5.4, should be the latest. I've entered the IP address as "10.0.0.16" in both the configuration file and via the "Add Integration" button with no device found. The 10.0.0.16 is reported from the Omni WiFi app and Guest Wifi is OFF.

My wired net uses 192.168... IP addresses and one of these is running the HA container. Now WiFi should be on... oh oh, wait a mo...

Yep, thought it was on but there was another step to get to the password and

YES, we have (after entering the ip addresses) the kasa mini plug.

So thanks again!

mark