Problem with Week 2 Assignment

I Have passed all exercises and that notebook give all passed output but in the submission process i am getting 0 points why this is happening please help me my assignment strucked from 8 days still not getting clarity on this my assignments is now overdue because of this

Try and expand the report for each exercise. That will show you why each failed.

Each Exercise are perfectly correct .my doubt is is any problem in submission process .can you tell me how can i submit assignment