@ Wolfram
Please load the page in Chrome, hit the F12 key and then click the Console tab.
You will find this error:
Uncaught ReferenceError: jQuery is not defined
from this file:
theme_scripts.js
This is breaking javascript on your site.
Looking at the code, it seems the theme is using its own version of jQuery instead of the version bundled with WP — this will break plugins, not just Connections. This is considered a very bad practice and should not be done by themes or plugins.
It also appears they are loading their theme script before their version of jQuery which is why the error is occuring. It needs to be loaded the other way around.
You’ll have to contact the theme’s support team in order to have their devs correct these issues.
Something you can try…
Connections includes an option to try fix loading the correct version of jQuery.
Navigate to the Connections : Settings admin page and click the Advanced tab. Scroll to the bottom an enable the jQuery Compatibility option and save the changes.
What this option does is it tries to force the use of the correct WordPress version of jQuery. By doing so, it just might also force things to load in the correct order. But, that will really depend on how the theme loads it’s scripts and its version of jQuery.
Hope this helps, let me know.