I haven’t tried this particular one, but what happens often (for me) in Publish is that the browser cache is stuck on a previous version. So to see the changes, if there’s any, you should also empty the caches.
(So: publish → wait → empty cache → refresh button → see what happens.)
(EDIT: I misremembered, now that I think about it I also styled the footnotes somehow. My CSS knowledge is close to 0, so it had to be some copy+paste from those snippets, which means they should work for you as well.)