Note: There's no option for the HS220 in the help-desk system. 

My HS220 has worked for a while. Suddenly it stopped. Right now the lights are blinking green and orange slowly.  I'll tell you what I've done so far...

Deleted the unit from my Kasa app

Turned off VPN on my iPhone.

Pressed the restart button on the bottom right of the switch.  The light that should be being controlled flicks on and off.

Pressed the reset button on the bottom left of the switch. 

Connected to the TP-LInk_SmartDimmer_A475 network.

It asks me to select my home wifi login.  I do so and enter the correct password (triple-checked)

I checked my router security. My home network is set to WPA2-PSK (AES).

It doesn't connect.  Please help!

TIA