Slider Link not working

Hi, I have included a slider with images on my homepage. Now, I have also set the links for each of the pictures but whatever I do, the link doesn’t redirect to the posts but opens a popup white-screen. I am at loss what this could cause and how I can fix it so that the images will link to the individual posts. This is my url so you know what I am talking about: http://www.breathingtravel.com Thank you for your help!

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