Please be patient with the grading process for mini-case study questions. It takes time. I have over 300 questions to read!!! They will be getting graded, a few dozen at a time, but not instantaneously, like the chapter mini-quizzes. So the fewer course mail messages about when will my questions be graded? - the sooner they WILL be graded!
In the meantime, concentrate on the learning module, using the three concept guides to guide your way.