Adding social sharing buttons to posts

Hi there. A while back one of your staff added code to my sites so that I had social sharing buttons automatically on all posts whether I used the editor or not. However when I updated my sites the other day, the buttons have disappeared from one of them but not the other.
I’ve checkout out the files in my child theme on both and they seem to be the same so not sure what’s changed on the site where the buttons have disappeared.
Can you tell me what I need to change to put the buttons back?
The two sites are http://ruwinning.com (still has buttons) and http://ahealthymeal.com (buttons have disappeared). With the second site other settings also changed that didn’t on the first site and I had to fix them up – colour settings mostly. Any suggestions as to why?

Thanks.