problems with course on learn.ww.wp.xz.cn

I’m trying to do the course on learn.ww.wp.xz.cn and have progressed to the Post or Page: How Are They similar? lesson at https://learn.ww.wp.xz.cn/lesson/post-or-page-whats-the-difference-and-which-should-i-use/

The page says “You require 100% to pass this lesson’s quiz.” But there is no quiz for this page. The next page “Post or Page: How Are They Different, and Which Should I Use?” won’t let me progress because I haven’t completed the previous page. I’m sorry if there was a better forum to post this question.

Thanks!

The page I need help with: [log in to see the link]