Place the ring on the charging stand and check that the LED light is red. This indicates that the ring is charging. The LED light will turn green when the battery is charged to 95%. The battery will last for two weeks before it needs charging again.
If the LED light does not turn red or green, try the following:
Check that the USB connection you use when charging can take more than 5V.
Change the charging cable or charge the ring via a laptop using the USB connection.
Once the ring is on the charging stand, gently move it around to make sure the pins are connected properly.
If none of the above works, reset the ring.