Here is an alternative to Noah social sharing if you have problem with "Facebook button" like me,
1) Go to www.share42.com.
2) Choose the social icons you want to put on your website
3) follow the steps and download the share42 folder ( contains JS file + social icons images)
4) put that folder on your website in Questio2answer/qa-content
5)Download this plugin : Social share plugin
6) Put the plugin in Question2answer/qa-plugin folder
7) Go to admin-->layout and activite it.
You should have social share icons on question page on side panel
hope it Helps :)