Hello,
Unfortunately Instagram has disabled its API to show Public Content. For the meanwhile, you will need to Generate a Access Token from http://instagram.pixelunion.net/ and then find the following code in the js/functions.js File:
36286274.b9e559e.4824cbc1d0c94c23827dc4a2267a9f6b
and replace it with your Newly Generated Access Token.
However, for the time being you will only be able to show your Own Instagram Account's Photos as this has been enforced by Default by Instagram. The First 8 Digits of the Access Token is your User ID.
We are working on applying for the Public Content Access to Instagram but we will have to wait for it as it will get reviewed by Instagram. And once we are ready we will add our Own Access Token Generator App so that you can use it to for your Instagram Feeds. Thanks for your Patience.
Meanwhile, do let us know if we can help you with anything else or if you find any further issues with Canvas. Thanks. :)