May I offer some tips (have published many articles about Quizzes, and am supporting CP users developing in the health sector). Hide the playbar during the quiz. It can be confusing for the learner, because when they navigate backwards to an answered question they expect to be able to change the answer,  which is not possible.

Second tip: if this is a scalable HTML output (which I suspect it is), on the score slide drag the Review button under the Retake button. Again to avoid confusion for the learner. If the click the Review button before having exhausted the 3 attempts they will not be able anymore to use the remaining attempts.

Would be nice to see the score for each question, not only the default Results slide. You really should read about all my tweaks to improve the learner experience.