When customers finish the survey, there will be a "End of Survey" message.
In this moment, I want them to be able to share the survey with their friends or post it on a few social media networks. I've found the code from several websites like Facebook.
Share Button - Social Plugins - Documentation - Facebook for DevelopersThe problem that I have, is when I paste these code samples, they don't show up in the message. I feel like there's a restriction on my account or I am pasting the wrong kind of code.

Any help would be appreciated. The three "Share Now" buttons I want are SMS, Facebook, Twitter.