Enough! Well nothing is perfect, but mapper was made by cooperation with many, many people and works very well. Now you are blaming on work of many people who sacrifices their free time at cost of family or their hobby. And this is unacceptable.
This is not your first, nor second or third post with similar content. Constructive criticism is welcomed, because moves things forward, however I will not tolerate these rude word or this type of messaging. You post will stay here like a warning for others, but your activity on this forum is stopped.
Edit : Save all settings from general settings after editing mapper.