Loosen the screw in the bracket.
Grip the door edge. Move the bracket back and forth until the door is aligned with the frame.
Move the door open and close to ensure it closes without binding. If it still binds, adjust the pivot again.
Tighten the screw.
Lift the door up until the pivot comes out of the bracket.
Hold the door bottom. Twist the pivot to raise or lower the door until it is level.
Lower the pivot into the bracket. Release the door.
Stand back and examine the door. If it does not appear level and is still binding, adjust the pivot again.