ok,
I found 2 problems:
1. Offcanvas conflict
offcanvas replace javascript events on all buttons, to solve this we have put at line 15 in file /components/com_jsn/assets/js/socialconnect.js this code
$( this ).bind( 'click tap', function() {
2. JQuery conflict
you have 2 instances of Jquery Javascript library. From Joomla 3.0 to load jquery library there are a common Joomla API, many old components/modules/plugins that require jquery load it independently to keep compatibility with J2.5. Many of these components have a parameter to load or not a copy of own JQuery library, unfortunately this is not your case. You have a module "Responsive Contact Form" that load second Jquery library and not leave possibility to user to disable this.
Now we have disable this module, you need to contact your module provider to fix this or you can comment line that load second library (comment line 17 at file /modules/mod_responsive_contact_form/mod_responsive_contact_form.php)