The lens cover won't open if the camera's date and time isn't set. Set the date and time and perform a power cycle on the camera.
Follow the steps below to perform a power cycle on the camera:
- Power off the camera.
- Remove the batteries and let it sit for a full minute.
- Re-insert the batteries.
- Power on the camera.
If the issue still occurs after following the steps above, your device may need repair.  Go to Product Repair.
Other Possible Causes
- Water damage
- Sand or any foreign object inside the lens.
- Lens is deformed because of accidental drop, or excessive weight and pressure introduced to the lens.