Quiz doesn’t appear in course: “Getting Started With WordPress: Get Familiar”

Im taking the course “Getting Started With WordPress: Get Familiar“.

The lesson “Post or Page: How Are They similar?“, from the course, requires a quiz to be completed, but the quiz doesn’t appear. I didn’t had any problem with the past lessons.

I already tried clearing cookies and cache, and restarting the browser.

Is this only happening to me? or is the course broken?

The page I need help with: [log in to see the link]