Viewer not allowed to answer quiz
This has been happening to about 5% of our viewers for the last couple months on a variety of different courses. Each time I think I have it fixed, we hear from someone else.
When they get to a quiz, they get this "Incorrect" message at the bottom before they can even select any answers (see picture).
I have tried sending the quiz default to "unlimited," each question to "unlimited," have "Review" selected in the Results, etc. It is not isolated to just Macs - we've had some on PCs.
We have hundreds of people taking courses daily now, so it's a big issue for us.