Looking at your page, something (not JFBConnect) is inserting the following into your HEAD section.
<div
class="fb-like"
data-share="true"
data-width="450"
data-show-faces="true">
</div>
This will need to be removed. I logged in with your credentials and didn't see any other settings that should control this, which leads me to believe that it is hard-coded in your template somehow. Please make sure that it is not in your template's index.php file or any of your other files for your template. Other extensions should be smarter than to put something into the head like that, but that would be the next step if you can't find it in the template.
The reason that it is showing up on the K2 pages is that you have our content plugin enabled. When our plugin is enabled, we basically set a flag telling Facebook to interpret code like above as Facebook widgets.
-Melissa
how i can remove the social buttom from the top
