The customizer setting you showed in your screenshot is for archive, but the link you are having issue with is a single post.
You’ll need to uncheck the author box for single post as well:
https://www.screencast.com/t/E0eQb7bHO30P
Clicking on the author hyperlink isn’t going to an archive page. It’s putting author’s name next to an empty avatar on top of the posts.
It is the default WP author archive page, all the posts published by this author would show up here.
https://www.screencast.com/t/gLrSxz8dLDzB
You’ll need to set up your avatar in dashboard > settings in order to make the author avatar to show.
The private info field is only for the topic starter, I would recommend open a new topic if you want to send us links privately.