Complex sentence: If this happens and the ball goes into the goal, then the kick is retaken; if this happens and the ball does not go into the goal, then the defending side is awarded an indirect free kick from the penalty spot.
Split into simpler sentences: If this happens and the ball goes into the goal, then the kick is retaken. But if this happens and the ball does not go into the goal, then the defending side is awarded an indirect free kick from the penalty spot.