If Facebook login credentials haven't been set up yet, please follow this article:

Activating Facebook Login Add-On

1. Once the setup has been completed, the admin will need to go to Finance - Membership Plans and edit the levels they wish to grant this to.

2. Click on Additional Settings Tab and make sure this is set to YES.

3. Make sure to Save Product Details, even if it's already set to Yes.

Front End Use:

After this is set up, the Facebook login option will display throughout your website:

With this button the members can sign up using their Facebook account

As well login into their accounts with this tool:

The login will only work if the member either signed up using the Facebook account or if they log into their account and sync their profile with Facebook:

They can also Unsync their profile if they no longer wish to use this tool: