Best to contact customer care on this - so the correct ID can be linked to the Analytics user.  The Federated ID may be used by some other Adobe Products (CC, Acrobat, etc) or trusted orgs using the SSO integration - Customer Care can look into that as well.

Experience Cloud users in the Admin Console (Adobe ID or Federated ID) are linked to legacy Analytics users via email address.  If the email address in Admin Console matches the email address listed under the Analytics user login, then the system should link the Analytics user so the user can login ...