Facebook may think that you’ve violated one or more of its rules.You’re logged in on multiple devices, which signals to Facebook that your account may have been hacked.
These reasons can be categorized into user or system error, disregard for the Terms of Use and Community Standards, site maintenance, or security and include any of the following events: There are several reasons why you’re locked out of your Facebook account, which can be difficult and frustrating to undo. Why You’re Locked Out Of Your Facebook Account Is Locked However, what most people don’t know is that Facebook can disable or lock your account at any given time, restrict your activity even while logged in, or keep you from accessing your account altogether.