First, I did have to follow the instructions below (thank you!) to get it working. The documentation on the site is lacking.
But the major issue is that the length of the question is limited by the number of characters in the title of an article. I wanted a FAQ that read "I clicked the download button and I see the thank you page, but no download started. What happened?" Unfortunately that is too long for a standard Joomla title name so it wouldn't work.
I have tried Accordion FAQ and that works much better.
This may work for some but didn't for me :(