Hi @Alejandro Vargas,
Sorry, there are no resources in the Q&A forum to help with such administrator account sign-in issues, and we recommend that you contact Microsoft Teams to seek assistance.
I suggest you try steps in thread: https://learn.microsoft.com/en-us/answers/questions/2125540/help-me-i-am-locked-out-from-my-microsoft-business
Hope this information could be helpful, thanks for your understanding.
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