Student Submission not loading or visible in preview

Community Novice

I have been trying to use speedgrader to grade a pdf.  It shows the student submission on the right side under submitted files(I am using Test Student)  However, I have been waiting for the submission to show up in the left side window. It keeps giving me the blue spinning circle.  I have waited over 10 minutes, 30 minutes, 1 hour and not loading.  I am using chrome.