Hi Doris,
I'm Sumit, here to answer your query at the Microsoft Community.
Apologies for any inconvenience you are experiencing. I am happy to help you today.
The Facebook or Meta account would appear on the Microsoft Authenticator app if you configured two-factor authentication (2FA) using the software. If you used some other app you need to check that.
Additionally, the message might mean you have to get the code from another device running Facebook for your account.
Via https://www.facebook.com/business/help/20982725...
Steps to receive a code for two-factor authentication:
Open the Facebook app and tap the menu icon.
Tap Settings and privacy.
Tap Code generator.
Use the code to log in to Facebook.
If you don't have access to a mobile phone, learn how to generate a code from your desktop.
https://www.facebook.com/micro_site/url/?click_...[view_type]=v3_initial_view&extra_data[site_section]=help&extra_data[placement]=%2Fbusiness%2Fhelp%2F2098272590487298
I hope this information is helpful. If you have any further questions, please feel free to reach out to us. Good luck!
Disclaimer:
The link included is a non-Microsoft website that would provide accurate and safe information. Watch out for ads on the site that are frequently classified as PUP (Potentially Unwanted Products). There is no need to buy paid products to fix your computers as they sometimes do more harm than good.