If you are selling your Display 2 or otherwise want to factory reset it, do the following:
Open Main Menu > Apps
Go to Settings > System > Reset options > Erase all data (factory reset) and press Erase all data
If you are unable to unlock the Orca Display 2, you can factory reset via recovery mode:
Turn off your device
Press and hold the power and volume down buttons until a loading screen appears
Use the volume buttons to select “Recovery mode”
Press the power button to confirm
After the tablet restarts, use the volume buttons again to select “Wipe data/factory reset”
Press the power button to confirm