If you receive an error that your browser is blocking 3rd party session cookies, as shown in the screenshot, follow the instructions below:
If you cannot use Chrome or Firefox, see "General recommendations for successfully access My Media videos, or video quizzes" (above), and Safari is the only browser available, ensure that “Prevent cross-site tracking” option is selected in the device settings:
If the quiz does not load in the window, and they are using Firefox as their browser, advise them to turn off "Enhanced Tracking Protection" by following these instructions: https://support.mozilla.org/en-US/kb/enhanced-tracking-protection-firefox-desktop#w_how-to-tell-when-firefox-is-protecting-you