The light on my JUULpod flashes rainbow colors? Remove the JUULpod and reinsert it to reset the device. If you continue to have problems, please contact the JUUL Care team. Related articles The light on my JUUL blinks from purple to red? My JUUL is not producing vapour? The light on my Limited edition JUUL device blinks blue 5 times? My JUUL lights up and creates vapour when I am not using it? My JUUL is making a rattling noise?