Trigger box with link not working on mobile

Hi there

Having issues triggering the box on my iPhone. Works fine on the desktop.

Something I’m missing?

This is the code I have in a button:

<img src=”http://www.mad-daily.com/wp-content/uploads/2015/12/newsletter-box2.jpg&#8221; width=”305″ height=”126″ alt=””/>

Cheers

https://wordpress.org/plugins/scroll-triggered-boxes/