Thank you for post!
I understand that you are trying to access the registration campaign under Security > Authentication Methods in Azure, but they keep getting a 403-error saying they do not have permission.
It seems like you don't have enough roles to manage the Authenticator registration campaign, to access the registration campaign you need the appropriate administrative role which is Authentication Administrator role and privileged Authentication Administrator role.
Hope this helps. Do let us know if you any further queries.
Thanks,
Akhilesh.
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