The issue you are experiencing can only be fixed by the theme dev. Unfortunately there is nothing I can do to fix it from my side. I’ll explain.
The update to WordPress 4.5 included an update to jQuery version 1.12. That jQuery update fixed a bug, the details of which you can read about in this post by the WordPress developers.
I see your site is running version 1.6.7 of the theme and it seems the current version of that theme is 1.9.3 so they may have already have fixed the issue. So the solution is likely to update your theme. I recommend contacting the theme’s support.
I hope that helps! Let me know.