In the mean time, open up your FTP program and go to wp-content>plugins and ONE by ONE rename your plugin folders to to disable them. e.g Rename social-rabbit to social-rabbit-temp ... then check if your sites loads. If not ... rename another plugin folder the same way, then check your site again. Keep doing this till you find the plugin causing the problem. When you do, it will be deactivated, so rename it (and all the other folders) to their original names, then go to Admin and uninstall the problem plugin.
Then you can try installing a fresh download of the plugin again.
There is no "option" ... it's already built in. The problem is that it does not always work. Usually with other plugins when this happens it is because Wordpress's server is slow to send the notification ... but it seems to happen with Social Rabbit all the time, for a long time now. So it's probably a SR problem that needs to be fixed.