Hm... is it just because their captcha is hard, or does it seem broken? if it seems broken submit a github issue or contact at the twitter link on the site
gonna guess just hard, but after the first 2 or 3 screens i just said fsck it. does it intentionally try to cut tiny bits of the edge off each 'correct' frame to get good training data?
i did try the audio too though and had no idea what it was saying.