In CrowdFlower tasks, showing that Your accuracy is very low, then not opened any task page, after that timer start's but task dosen't appear, after I complited task they should show my mistakes. And time is also too short to find out information.

You need to do the task faster, maybe you don't have anything wrong but if you don't make the task in the time they give you, the answer will always be "You're Accuracy is too slow". For example: If you have 30 minutes to do a task you should take 10 minutes, not 30 complete.