Hello Desmond,
You can follow the given steps and check if it helps:
- Try to access Facebook from a browser or app you've used previously. Maybe you're still logged in on an old laptop, your work computer, or your tablet. When you find a device where you can still access Facebook, you should see a notification asking you to approve the new login.
- Use a Saved Recovery Code: After setting up two-factor authentication, you had the chance to save a set of recovery codes as a backup. (Maybe you printed the code, took a screenshot, or wrote it down and stored it in a safe location.)
- Confirm Your Identity: If none of this is working? Submit a request to Facebook. In the menu that pops up after you select Need another way to Authenticate (select option 1), select Get More Help, and let Facebook walk you through the steps to recover your account.
Thanks & Regards
Kaia Maingi