Most people I know who use iPhone confirmed that their Facebook session was expired and had to login again. People with 2FA - SMS auth are still unable to login.
@bfdwf423: 🤣 I can explain. Someone had posted a reply to my message and I replied to it. But then it seems like the person deleted their message. So now I look like a fool, agreeing to myself 🤣🤣
Mine just expired but I was able to sign back in no problem.