Microsoft Security | Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
You've asked in English language forums so responses here should be in English.
To remove orphaned accounts from authenticator you can remove the accounts from the device. On my android phone it is in Settings\Passwords & accounts
Make sure you do not have two-factor (MFA) turned on at provider's end!
--please don't forget to close up the thread here by marking answer if the reply is helpful--