The web version (using either Chrome or Safari) seems to be broken – for me anyway – when I attempt to do the course-level review (using the top level “all-included” review button):
After pressing “Next” to check my answer I am often getting a “Whoops” message:
Also, clicks on other buttons (e.g., to listen to audio choices) often seem to be ignored.
If I do the review level-by-level, things seem to work fine. The top-level “all-included” review was working fine for me last week.