Device does not show any LED
The LEDs on the frontal panel of the Moduly Nødz show the state of the system and the level of energy in the batteries. When there are no lights on the frontal panel neither Logo nor vertical lines, that could mean the batteries might need a recharge, the system could be turned off using either the mobile app or the switch on the unit, or the system is in an energy saving mode.
Check the mobile application to verify if your Moduly Nodz is in any of the mentioned states.
For more information, the next extraction from the manual shows the interpretation of the colors.