Carousel on productpage not working

[speelgoed-stelling]

The thumbs from the owl carousel aren’t clickable. nothing is happening when you click on it. The image should appear in the img div above

https://www.speelgoed-stelling.nl/sinterklaas/2585-karel-viert-sinterklaas.html.

Also when I hover over the image, the zoomed in image is placed above the sns menu header, this only happens when you scrolled down a little bit (so that the sticky menu has activated) (see the red arrow in the attachment)

Attachments:

1. 

   Naamloos.png
   

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