https://en-gb.wordpress.org/plugins/srizon-facebook-album/
You need to create a Facebook API at developers.facebook.com
Step-by-Step Guide
- Login to Facebook. Before creating a developer account, login in to your Facebook account. ...
- Developer Account. You'll need Facebook developer account to get started. ...
- Create new Facebook app. ...
- Choose Platform. ...
- Choose a Name. ...
- Follow "Quick Start" Steps. ...
- App ID. ...
- Protect your App Secret.