Add fa icon

Hi, I’ve not been able to display a Facebook icon on the LearnDash/BuddyPress ‘BuddyPress Activity Social Share Settings’ what exact text should be entered into the ‘Font Awesome Icon Class*’ field.

I’ve tried variations of this and it’s fa code/id f39e but it never displays the Facebook icon.

I tried using your site’s helpdesk but the Captcha system isn’t working and will not allow any matching text to allow form submission.
Thanks