Ping Sensor False Changes...

I’m using Ping Sensor to detect when my wife and my phones are connected to our home network.

I’ve got everything set up to alert me when I’m home and she arrives. For some reason ping sensor is missing our devices and showing us out despite our devices still being around.

I’ve tried raising the CurrentFailureCount to 3 but I’m still getting too many false indications.

Does anyone have any idea what I can try next?