Sometimes if your AirPods aren’t working correctly, like if only one of the AirPod is connecting or playing sound, a simple reset will resolve the issue. I had an issue where only my left AirPod or right AirPod would connect and not the other. I was able to fix this with a reset.
1. Make sure the AirPods are in the charging case and with the lid opened, hold the setup button for 15 seconds (the light will turn from white to orange).