I received a failing for a course; however, one of my project (which worth around 10%) was not graded. It is possibly due to my late submission (one minute late). Previously many of his students submit their works late (I mean super late), and he accepted them all. So I politely asked him by email whether the assignment is graded or not. No answer.
My other works are curved at a B grade. It was not a fancy grade so I politely asked for extra work as part of one of my previous email, well before the semester was ended. He did not answer that question, but he answered the other questions that I asked in the same email.
I have emailed him a few times before about grading or something else, he usually responds after a few days. This time, he is not responding for like 2 weeks. He does not have regular office hour. The prof is very nice (so I definitely don't want to appeal to a higher authority) and also super busy. Since our school has a loose policy on updating grade, he gives out my grade a couple of months after the course was over. Any suggestions will be appreciated.
He could have private office hour for his current students so I could try to sneak in with my acquaintances who are his students.
He is still teaching this semester at another campus so I could technically catch him after class. But I doubt that we are going to have a private environment for discussing grades.