what to do if one airpod is not working?
['On your iOS device, go to Settings > Bluetooth.', 'Tap the "i" icon next to your AirPods.', 'Tap Forget This Device, then tap to confirm.', 'Place both AirPods in your charging case. ... ', 'Press and hold the setup button for a few seconds, until you see the status light flashing white.']