We'll create fresh WordPress site with GooglePlus Multi-Authorship installed. You have 20 minutes to test the plugin after that site we'll be deleted.
GooglePlus Multi-Authorship provides a straightforward solution to properly add Google+ Authorship markup to the head of each post and page on a multi-authored site.
It follows the recommended use of the rel=”author” link tag to point to a Google+ profile as described in this FAQ on Google’s official webmaster blog.
For questions and support, please post them at the plugin page. I can’t provide quick help if you post your questions in the forum as I am not always in the forums.