Hello,
Theme can’t delete the content of the page/post/project. Some elements could be disabled if you updated XStore core plugin to latest version but did not update theme to the required version. Footer may disappear if widgets were removed by the user or moved to unused widgets area if you switch theme.
Don’t you have the 8theme Social widgtet in the list of widgets?
What version of theme and what version of the XStore core plugin do you use?
Regards