To turn the Keezel on, you need to press the button at the bottom of the device for 2-3 seconds. The light on the Keezel will turn blue and after about 30 seconds, it will be blinking green.
If this doesn't happen, please first make sure the keezel has enough battery. It's best to connect it to your laptop or an outlet via the USB cable you received in the package so that it starts charging.
Then press the ON/OFF button for a full 10 seconds, release, wait 1-2 seconds and then turn it on normally.