Hi @Enrique Erda B , have you tried manually re-adding your facebook account?
On the Set up via Third Party Authenticator page, which includes the QR code, and a code written out for entry into your app. Keep this page open so you can see the code.
Open the Microsoft Authenticator app, select Add account from the Customize and control icon in the upper-right, select Other account (Google, Facebook, etc.), and then select OR ENTER CODE MANUALLY.
Enter an Account name (for example, Facebook) and type the Secret key from Step 1, and then select Finish.
On the Two-Factor Authenticator page on your computer, type the verification code provided in the app for your Facebook account, and then select Verify.
The Accounts screen of the app shows you your account name and a verification code. For additional security, the verification code changes every 30 seconds preventing someone from using a code multiple times.
Please let me know if you have any questions.
Thank you,
James