[HELP] Link not working on Image Hotspot

Hello Guys!
Need help with my new WordPress setup.

Please refer this page: http://beta.esbe.in/happy-customers/

I have added an image hotspot. On hover I see a lightbox with BUY button. But the link is not clickable. I can see the link in the status bar, but somehow when I click the button the page does not open.

Please suggest.

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