ClassiPress: Facebook Login Fix for fb-xxxxxxx Usernames
After digging through several posts on this topic, I have finally come up with a solution for the Facebook login issue in which user's names would show up as fb- followed by a random string of numbers. With this fix, ClassiPress will show the first name and last name of the user (by default) or the display name the user chooses from the ClassiPress dashboard instead of fb-xxxxxxx.
The actual fb-xxxxxxxx username will still remain in the SQL database as an identifier for the user, and to prevent duplicate accounts with the same first and/or last names from being created.
Click here to view the full tutorial