problems with text and facebook

Hello people!

I'm using the OT Boutique Box, joomla 3.

I have two problems:

1. Articles are shown blog. On the frontpage, if someone clicks on the title, the text appears duplicated
2. When sharing the article on facebook, the image of the article does not appear, but the slide show.

Link::
www.clubedolivroemmanuel.com.br/J301/index.php/books

How to fix these things?
Thank you

???????