The Levven Q is either not connected to power, or there is a problem with the power supply.
Check the connection between the wall plug, power adapter, and the power input.
Test the wall plug with another device to ensure it has power.
Test the Levven Q by connecting its power adapter to a different plug.
If the Levven Q will still not power on, your unit may require a repair or replacement. Please contact Levven support.