LinkedIn button not displayed

Please make sure you've followed the LinkedIn Application Creation guide. Specifically, step 3-2-4 for setting up the Javascript API domain(s) for your site.

Fixing that will likely get you going, but if not, let us know, and we'll help investigate further.

Thanks,
Alex

Awesome! Glad to hear we could help. We're actually in the process of going through all of our documentation to bring it up to date and will check that out as well. Each social network is always making minor changes and it's impossible to be 100% accurate, but we certainly try to.

As always, should you need anything else or have any other feedback for features or improvements, just let us know.

Finally, if you haven't already, please consider leaving a rating and review for JFBConnect, or our support, on the Joomla Extension Directory. It certainly isn't required, but is very appreciated:
extensions.joomla.org/extensions/social-...ook-integration/7215

Thanks,
Alex