If you wish to access your account but
you get a pop-up of Facebook
account unavailable,
so in this scenario, you must wait for a moment to settle down this issue.
Along with it, you have to refresh the current page, or trying to log out and
re-login your account for a quick fix. Ensure, you have a cellular or Wi-Fi
connection. And, if you have still any queries, then dial this number to
contact our support team.