Troubleshooting Turnitin

I scored my student "0" in Turnitin, but when I return to D2L's "Evaluate Submission" page for that student, and click "Use this Score," it does not populate in D2L's grade box.  

D2L is unable to accept a "0" score from Turnitin.  In these cases, you must enter the score manually in the Evaluate Submission page (or the grade item in the gradebook.)

In The Turnitin More Options (Optional Settings) dialog page, I am unable to click Yes/No for "Allow students to view Originality Reports."  How do I set this one way or another?

“Allow Students to view Originality Reports” is governed by the checkbox out in the tabbed screen: “Allow learners to see Turnitin Similarity Scores in their dropbox folder.”  If you have the latter box checked, Turnitin insists students can see their originality reports.  If you leave the latter box unchecked, Turnitin insists students cannot see their originality reports.