Inside, lay the disc that clings to the door and twist it counterclockwise to retreat it to the back.
2. Then twist the right hand side of the hand (that ball) to the right and left, and carefully look at the small hole above it. Use a thin object to push it in and press it hard. The ball can be pulled out.
3. Just take the disc that you just lifted. You will see two screws, drop them, and pull them out of the side of the door.