In order to display new social icons, you need to update FontAwesome to latest version. Please follow the instruction to update FontAwesome:


1. Download FontAwesome latest version here: http://fontawesome.io/#modal-download


2. Go to wp-content\plugins\js_composer\assets\lib\bower\font-awesome


3. Upload and override font-awesome.min to 'css' folder.


4. Upload and override all fonts to 'fonts' folder.


5. Save and try again.