The LED lights on the charging case do not work.

1. Ensure that the charging source and the USB-C cable are in working condition.
2. Check that the USB-C cable is connected correctly to the charging case.
3. Ensure that the charging pins do not have any dirt on them which can affect the power flow to the case.
4. Make sure that your device is updated with the latest version of the firmware.
5. Reset the device.