I had applied for python for everybody specialization course fot studying by University of Michigan. I failed to continue the second specialization course due to personal commitments. Now only I started the course but it showa that some quizzes and assignments are locked. It shows that it will be unlocked when the session begins. I think i lost the session so it will shows like that. I really must to complete the specialization course with a certificate. Please fix this issue as soon as possible. Thank You.