To enable Facebook logins for your site, you must first create an app in your Facebook Developers account:
- Click on My Apps > Create App and Set a new name for it.
- Once the app is created, click on the Settings link on the left side, then Basic.
- Copy the App ID and the App Secret.
- Set the App Domains to the name of your domain. For example: yourdomain.com, www.yourdomain.com
Once you have done that, go to your eCommerce Suite's admin page, and click on Design Layout > Layout and Themes > Site Layout.
On the Login tab, enable social logins and enter your Facebook ID and App Secret
Click Save Changes
A Facebook social login will now show up in your site's login / registration page.