My instagram won't go into the 4 square grid seen in the demo.

Firstly, Our DW Minion using the following code to add the image as our demo:

<ul> 
<li><a href="http://bit.ly/tf-wallclassic"> <img alt="demo" src="http://demo.designwall.com/dw-minion/wp-content/ uploads/ad-2.gif"></a></li> 

<li><a href="http://bit.ly/tf-wallclassic"> <img alt="demo" src="http://demo.designwall.com/dw-minion/wp-content/ uploads/ad-2.gif"></a></li> 

<li><a href="http://bit.ly/tf-wallclassic"> <img alt="demo" src="http://demo.designwall.com/dw-minion/wp-content/ uploads/ad-2.gif"></a></li> 

<li><a href="http://bit.ly/tf-wallclassic"> <img alt="demo" src="http://demo.designwall.com/dw-minion/wp-content /uploads/ad-2.gif"></a></li> 

</ul>

You can add your image to Media first, then replace our image with your images link here: http://demo.designwall.com/dw-minion/wp-content/uploads/ad-2.gif
Please find here for the document guide on how to configure:
http://cmspioneer.com/designwall/guide/dw-minion/#sidebar_positions_widgets

– If you add the instagram image, we have another suggestion is that you can use the Instagram master plugin, please find the plugin here: 
http://wordpress.org/plugins/instagram-master/
Please try and let me know the result so I can support you better.