Insert the both ZeBuds back into the case and take them out to enter pairing mode again.
Make sure the mobile device is within 10m of ZeBuds when trying to pair initially.
Double tap on the top section (touch area) of 2 earbuds at the same time to reconnect both earbuds together. If it works, the 2 earbuds will start blinking very quickly, then the light stays on for 2 seconds. After that, the lights blink in normal speed.