I haven’t used it in the last several years, but from about 2014-2018 any time I tried to download, it required registration, and any time I tried to register, it just didn’t work. It was some problem with the javascript in their site. Probably related to captcha or something. Yes, I tried multiple computers, multiple browsers, even tried registering on a library’s computer.

Looks like their site is less shit now, but it’s still awful.