Not able to access problems to be solved

why I am not able to see in progress bar excercise M1.02’s progress even if I have completed it? what is the whole procedure to go through for doing execise problems? do I have to click something to show I have finished exercise?

Only the intermediate and wrap-up quizzes are part of the progress check-up.
We have intermediate exercises (with there solutions) that allow you to be sure that you got the main message. However, they are not being evaluated as part of the grade for the MOOC.