If you no longer have access to your Microsoft Authenticator app and are unable to log into your admin panel, you can try the following steps:
Account recovery: Go to the Microsoft account recovery page (https://account.live.com/acsr) and follow the instructions provided to recover your account. You may be asked to provide information to verify your identity.
Contact Microsoft Support: If the account recovery process is not successful, you can reach out to Microsoft Support for further assistance. They have dedicated teams to help users with account-related issues and can guide you through the recovery process.
Provide necessary details: When contacting Microsoft Support, be prepared to provide them with relevant information about your account, such as the email address associated with the account, any previous recovery codes, or any other details that can help verify your identity and ownership of the account.
By following these steps and working with Microsoft Support, you should be able to regain access to your admin panel and manage your account.