Instagram has moved to a new Graph API and will be discontinuing the current method in early 2020.
In preparation we have rebuilt our Instagram widget using the new Graph API and scheduled for release on Monday Jan 12, 2019. This release will disconnect all Instagram widgets on your website. You will need to reconnect your Instagram Account to your website.
View our help article on connecting our new Instagram Widget
If you have any questions please reach out to firstname.lastname@example.org