Hi all there,
Thanks for downloading this plugin.
For the past few days, the Instagram API response is having technical difficulties. As this plugin is relying on Instagram API, some functions may not be working perfectly on newly installed on wordpress framework.
Below is the link on Instagram Developer thread discussion on going for this problem: https://groups.google.com/forum/?fromgroups=#!topic/instagram-api-developers/JVA9WLWTntY
Recently, I myself had submitted ticket support and hopefully will be prioritized for immediate fix.
I'll update this thread from time to time until Instagram Server is back to make sure everyone is aware of what's happening.