Hi @chiki_22 ,
maybe this helps:
https://learn.microsoft.com/en-us/azure/active-directory/user-help/user-help-auth-app-backup-recovery
Another option might be renew the MFA account config here: https://aka.ms/mfasetup
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(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)
Regards
Andreas Baumgarten