Instagram : How to use it in Your Application Builder since their API policies have changed.

Since Instagram has changed their API policies, now Instagram keys must be entered in the editor side in the Settings menu :

Go in Settings:

Then click on Instagram:

Register your API key here: https://www.instagram.com/developer/

Then fill your API keys :

Note: That means each client must create his own Instagram keys.
A client can display his own Instagram photos only, it is no more possible to display another user photos.