TP-Link TL-WPA4220 2-Port Add-On Powerline Adapter - unable to pair
I am unable to pair a new TP-Link TL-WPA4220 2-Port Add-On Powerline Adapter to my existing network. When I press the pair button on the new adapter nothing happens. The instructions state the LED light will start blinking and the powerline light will become steady. However nothing at all happens when I press the pair button - no blinking and no steady lights comes on. I have tried this now 10 times and also reset the adapters.