Add a new instagram widget

Follow the instructions here.

Activate the Subscribe Widget

1. Go to Layout and open the "Sign up for Updates!" widget.
2. Click on "View stats and learn more.".
3. Click on your feed.
4. Go to Publicize (on top) -> Email subscriptions (on the left).
5. If it's not activated, click on "Activate" (or "Save").
6. Exit the page and save the widget.