My extender is positioned on the next door room to my router. I get full WiFi signal on my iPhone, iPad and computer exactly where the extender is positioned but it only shows 1 LED light on when it's connected to the same WiFi. I'm measuring 200Mbps download on the original internet WiFi network at the spot where the extender is, and only 20Mbps on the extender's network. There is only one concrete wall separating the rooms and there's a door always opened. And the signal used to be stronger at this same spot. Never full strength but at leas 3 or 4 LEDs would light up.