I was trying to take a Smart Proctor exam and it would not load. I got an agent on the line to assist and when I tried to go back to desktop to use my cutting tool to screen shot the issue. It would not let me and I lost Smart Proctor. Next thing I know all of my tabs in canvas for my classes are gone. I have only the Modules now. No grades tab, or assignments, tab. How do I fix this? I need to retry the exam some how.