Hello @Walter Escobedo ,
It seems like you are getting Error AADSTS50020
- User account from identity provider does not exist in tenant.
I suggest you look into this document to troubleshoot this issue.
If this is still an issue, I would recommend you raise a support case with Microsoft Graph, a Support Engineer will be able to assist you better. You can raise support ticket from
http://aad.portal.azure.com/ or https://admin.microsoft.com/#/support/requests.
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