The Instagram Basic Display API, which powers version 2.0 of TZ Plus Gallery, uses access tokens that are only valid 60 days.
This means that you will need a server-side component to keep your access token valid in order for TZ Plus Gallery to work correctly.
There are currently 2 available options for keeping access tokens valid:
Instant-tokens.com is a website that generates & refreshes Instagram access tokens. It is provided for free by Coding Badger, and is easy to integrate with Instafeed.js.
Instagram Token Agent is an open-source Ruby-on-Rails application written by Ben Hull, and available on GitHub. It can be quickly deployed to Heroku, or any other Rails-compatible hosting mechanism.
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