The Author Byline shows up right under the post title. For example on the blog overview page (homepage) where all your articles appear and as well on the single blog post view.
It doesn’t show up on individual wordpress pages.
You have the following Options
You can define a custom headline for the popup that shows after a visitor clicks on the link in the author byline.
You can define a custom text to go along with the Popup Headline.
Popup Call to Action
You can edit the text of the call to action button
You can use this small text to communicate that you website is trustworthy or any other additional information.