Songkick's Code doesn't work

I need desperately your help:

I´m building a web page for my new music band, and we want to add the code that Songkick provides us so that we can visualize our future concert's. I'm trying to add the code to our page, but nothing loads up in the screen. This is the code provided by Songkick:

<a href="http://ift.tt/2foGsn4" class="songkick-widget" 
data-theme="dark" data-detect-style="true" data-font-color="#E58B9F">Billie 
Balloon tour dates</a>
<script src="//widget.songkick.com/widget.js"></script>

Can anybody help my please? Thank You ;)