Font Awesome icon in header not appearing

I purchased a template and the site is here http://salesbooster.ca/unleashed/

In the header I have Social Icons that were placed there using Font Awesome.  I have tried to ad Instagram using the following code f16d using the same method they used for Facebook and Twitter icons.  However, all that appears is a rectangular outline and not the instagram icon.  Any ideas on what I am doing wrong here??
livewirewebsolutionsAsked:
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Snarf0001Commented:
You're using an outdated version.
Your font version is 3.1, the instragram icons didn't come into play until 3.2.

Think they're at 4.3 now, if you upgrade it should work fine.
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livewirewebsolutionsAuthor Commented:
Ok.  I updated all the font awesome files to the latest version and now none of my icons show?
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livewirewebsolutionsAuthor Commented:
Thanks, I upgraded to version 3.2.1 and it works now.  The upgrade to 4 involves changing the code on the site.
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