Incorrect post layout

Hi, I have this strange layout after adding the short code [recent_facebook_posts] to the page, which is set as static front page.
See here the screen grab:
http://www.artoctopus.com/images/Untitled.png

Could you advise what’s wrong and how may I fix it? The feed seems to appear ok on the sidebar as widget. Thanks.

https://ww.wp.xz.cn/plugins/recent-facebook-posts/