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Facebook - Authy

How to Add 2FA to Facebook Without Using Your Phone Number

How to log into Facebook without a Code Generator

Facebook Security - How To Secure Your Account

Code Generator feature missing in an updated version of Facebook app on iOS. : r/facebook

Facebook is blocking me in 5 different ways from logging into my account - text message, Code Generator, login alerts, 2FA settings, identity confirmation (screenshots with comparison to a normal account) : r/facebook

Protect your accounts with two-factor authentication

Help - Locked out of Facebook because I lost access to code generator and reaching a human seems impossible. - Programs, Apps and Websites - Linus Tech Tips

Receive a code for two-factor authentication

Facebook security now supports U2F authentication