Recursos do Microsoft 365 que ajudam os usuários a gerenciar suas assinaturas, configurações de conta e informações de cobrança.
Hello Leo Damian,
Thank you for positing in the Microsoft community.
I'm sorry to hear about the trouble you're experiencing with your Power BI login. Based on the information you have shared with us I understand you are having getting prompted for verification cade from Microsoft authenticator app. you can use the following step to ensure your account is safe.
Contact IT administrator to reset the password and Multifactor authentication: If you detect suspicious activities in your account it is recommended to contact administrator to help rest the password and multifactor authentication for your account. Ensure that any bad actor how hacked your account will loses access to your account.
The administrator can do this by following the Manage user's authentication options. (If you're not sure who your admin is, you can refer to this How do I find my Microsoft 365 admin? - Microsoft Support).
For more information on how to respond to compromised account see the following article
Responding to a Compromised Email Account - Microsoft Defender for Office 365 | Microsoft Learn
Please verify the above suggestion, if there any further clarification or assistance you might require, please feel free to reply here I will be happy to assist.