What ever the problem was has now been corrected. I followed alll the steps as I had been doing and they both connected. Thanks to all for your assistance.

Aprilcoco wrote Does the wireless network name and password change? If yes, you have to reset the plug and reconfigure it. Or you can set the same wireless network name and password as before....

Model : Hardware Version : Firmware Version : ISP : Recently my ATT Uverse router restarted [I am assuming an update was made by ATT] and both of my HS100 Smart Plugs disconnected. I have tried...