Fonctionnalités Microsoft 365 qui aident les utilisateurs à gérer leurs abonnements, leurs paramètres de compte et leurs informations de facturation.
Hello
I am hoping to understand the context a little bit better.
Is your Office 365 a business subscription using your work email address ? Is your work email address assigned to you by your employer ?
Which link do you use where it says the email address is not known?
Did you log in using https://login.microsoftonline.com ? Curious to know if this link allows you to sign in.