Facebookshare not displaying right imae

Hi,
i have added this plugin in my site “http://www.whatsappguru.in” and had already set all social open graph in this page Check here but when i am going to share this link on face book or post this link in any of facebook group it take any random image from my site…

Its major issue for me can you please help me out what exactly issue in here..??

Thanks,
whatsappGuru

https://wordpress.org/plugins/wp-open-graph/