Admin User Not Showing As Author

I’ve just installed the List All Posts by Authors plugin, and all authors for our blog show up in the list, except for me. My status on the blog is the “Administrator”. All articles I write are under that user account. All other authors on our blog are set up as “Editors” in their user accounts – and they all show in the Author list.

Is this a bug in the plugin, that “Administrator” status authors do not show up in the list? If not, can you please tell me how I can include the status of Admin to show in the author list.

Thank you!