How to make the Views Slideshow controls actually work?
Would it be possible to share the link?

It is also possible that there is a jquery conflict (ran into this issue a while ago). In my case it was superfish + flexslider, both with their own jquery source that were not interchangeable. This lead either the slider not working, or the menu not working.

I solved it by using jQuery.noConflict();
https://api.jquery.com/jQuery.noConflict/