If you have a course-specific problem that you want to discuss, you should talk to the instructor or teaching assistant(s) of the course.
When reporting bugs, submission IDs for the submissions affected by the issue are very helpful for us when debugging. Submission IDs can be seen on the queue page. Not including relevant submission IDs in questions/bug reports will most likely just get you a reply asking for one.
Before asking a question, please read
With these things in mind, feel free to contact us at [email protected]