Facebook Login - Documentation - Facebook for Developers.
You're still logged in through Safari. Log out there (or clear your cache).
Another party can also gain access to someone's Facebook account by resetting the password; if the user has Login Approvals enabled, however, the only way they can access that user's account is if they have the user's mobile device as well.
You can use our account hacker to hack most Facebook accounts (71% success 21/08-16). All you need to do is to enter the ID of the target account in the textbox, click the start button and let our servers do the work for you.
How to login to your Facebook account from different computers, and pitfalls to avoid when using a shared or not password-protected machines.
I'm trying to retrieve my facebook account but I can't remember the login details.
Your account was suspended. You can’t log in with Facebook or Google+. Your email is old/inaccessible.
Another Facebook login issue users experience are page errors that are displayed before, during or after the log in