The project rating is the average score for 14 days based on evaluations made by performers in four categories:
The project rating is available to performers. By default, the list of tasks is sorted by project rating.
Perhaps the performers found your tasks too difficult. Try to simplify them.
Shorten instructions and rewrite using simpler language. Add pictures and examples.
Make the interface more user-friendly and don't make the performer complete unnecessary actions. Use keyboard shortcuts.
Reply to messages from performers regularly. Try to provide feedback as fast as possible. Correct errors promptly and use mailing lists to notify performers of changes.