I am the main teacher (Lead Teacher) on a Canvas module. I have setup an assignment which was submitted via TurnItIn. I was able to mark student work and leave comments in Speed Grader. I also have left annotations on the documents using the Speed Grader tool. However, my students couldn't see any of this material. The grade also did not carry over into the gradebook (I've had to manually input these).

Does anybody have any ideas what I've done wrong? Might it have something to do with ticking the moderated box in the assignment options?

EDIT: I've added a 4th screenshot showing the mark-up in Speed-Grader