Miscellaneous topics that do not fit into specific categories.
There is a forum specifically for authenticator issues. You can find it here: https://learn.microsoft.com/en-us/answers/tags/792/microsoft-security-microsoft-authenticator
If you did not make a backup of your autheenticator data and then restore that backup, then only Yahoo can help you, if they offer support. The must remove 2FA from your account and then you will need to reconfigure it as you configured it the first time.