On Friday night issues starting happening related to authorization with Instagram accounts. This appears to be effecting all accounts that are trying to pull in images from Instagram.
7/24 7:37PM CST
Facebook has resolved the issue with the Instagram API.
7/24 1:36PM CST
Facebook has acknowledged an issue with the Instagram Graph API, which we use to connect to your Instagram account. You can view the API status here.
7/24 10AM CST
Other developers are reporting the same issue with the Instagram API. We'll provide an update when Instagram has resolved the issue.
7/24 9AM CST
After some initial investigation we've determined there is an issue with the Instagram API and have filed a bug report. Nothing changed in how we try and connect with Instagram accounts Friday night.