Look at the Wi-Fi (Internet Gateway) Receiver that should be attached to your home broadband Internet router/box.
The Wi-Fi (Internet Gateway) Transmitter that should be attached to your charger.
If these are working properly then all four lights should be either ON (“PWR”) or flickering quickly (all others)
(Receiver shown here)
If no lights or only some of the lights are on/flickering then go to GreenFlux help and select Wi-Fi Bridge Receiver Lights not all on/Flickering or Wi-Fi Bridge Transmitter Lights not all on/Flickering