Why isn't the indicator on the Mijia Lint Remover 2 lighting?

If the indicator on the Mijia Lint Remover 2 isn't lighting, please refer to the following aspects:
1. If the product's battery is depleted, the indicator will not illuminate. Please charge the product promptly.
2. The charging cable, adapter, or power source may not be functioning properly. Try a different cable, adapter, or power outlet to rule out connection problems.
3. If the device has been used continuously for an extended period, it may activate overheat protection and shut down temporarily. Allow it to cool down before restarting.
4. Restart the device, then check if the indicator is on.
5. If the indicator still does not light up after charging and troubleshooting, there may be an internal hardware issue. Please contact the after-sales service center for further inspection and repair.