If you're having trouble waking up your Pebbles, here's how to resolve the issue:

1. Check the battery: Make sure your Pebbles are sufficiently charged. If the battery is low, the Pebbles may not wake up. Charge them with the included USB cable and check the LED charge status indicators.
2. Good charging: Make sure that the charging cable is properly connected to the Pebbles and the power source. Charge the Pebbles until the LEDs turn green.
3. Shake gently: After charging, try to wake the Pebbles up by shaking them gently. This should activate them from sleep mode.
4. Check for LED indicators: When you shake the Pebbles, leave them on the LED indicators to confirm they wake up.
5. Try a different power source: If the problem persists, try charging the Pebbles with a different USB power source to rule out power issues.

If you've tried these steps and your Pebbles still don't wake up, contact Glimp Customer Service for further assistance. We can provide more in-depth troubleshooting or advice on the next steps, possibly including a warranty claim if necessary.