If you are experiencing issues with your sleep/wake functionality, please be sure to try the following troubleshooting tips:
1. Go to your settings - Display & Brightness - and confirm the lock/unlock button is enabled.
2. Turn the iPad on and off to "reboot" it.
3. Confirm the iPad is in the case correctly making sure you can see the camera through the camera hole on the back.
If you're still experiencing issues, please feel free to reach out to our support team here.