Why isn't the light on when I first received it?
Please check: whether the button on the back of the light is pressed. Is the light charged, if it's dead it needs to be fully charged in direct sunlight for 8 hours. If it is daytime you need to cover the solar panel of the light to light up.
Why doesn't the light last so long?
It offers 3 modes:1 Motion detection (activates with movement, consumes power if triggered often), 2 Constant on (less bright for all-night use), 3 Smart brightness (stays dim but brightens with motion, consuming more power and reducing runtime).