Social share boost breaking page size in mob and tablet devices

Hi,

I am using your Social Share Boost plugin but I found out that it is causing the change of my page size in the tablet and mobile versions.
Please check it on a tablet or mob phone. It is causing the page not to be full screen.
http://www.agiokampos.gr/

Do you have any suggestions/changes that I could make in the plugin, so that I can avoid removing it?

Thanks,

https://wordpress.org/plugins/social-share-boost/