I created a quiz for the students. About 2/3 of the class can take the quiz with no issues. The rest of the class is not getting the images displayed, only a blurry padlock. The settings on all the computers are the same, and the quiz is set up correctly I assume since most of the class has no issues. What is the problem? I am using this one for a review for tomorrow's test which I also set up in the LMS so I'm kind of nervous that it won't work either.