Eric, the instructor feedback files for your last six projects indicate that they were all incomplete. The grader included some helpful information for some projects and for others you are advised to contact an instructor. Please click on the "View Project" buttons for each of the returned drawing assignments and download the instructor feedback. You should definitely contact an instructor if you have any questions.
You can call the instructors at 1-888-427-1000.
Or, you can send a message to the instructors from your student portal. To e-mail a question from your portal you should click on the "Help Center" link on the right side of the page, click on "Find Answers/Ask A Question", type anything into the search field and click on "Search", and then click on the "Ask a Question" tab. Fill out the form, selecting "Instructional Support" for the department, and submit it to the School. An instructor will reply as soon as possible.
I wish you the best of success on your projects.