I really need assistance. I'm not receiving a 6-digit login code via my phone. I set up my FB account linked to other apps for a two factor authentication if someone attempts to login from another IP address. It's proven to be a nightmare as I'm not receiving login codes via my phone and therefore I'm locked out of my own account. I've checked with my phone provider and everything is OK from that end and messages aren't blocked etc. I've even tried logging in via the app on my phone and it won't allow me to login either. Would anyone please assist me urgently? I have attempted to try and locate some contact at FB but their pages keep directing me towards help pages rather than a phone number or email address. Thank you to anyone who can assist me urgently.