Microsoft authenticator Unable to re-enable phone login

Question

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1. The authenticator app approves phone login function is turned off My account is set as a password-less account, and I have enabled the use of Microsoft authenticator to log in. Recently, when I use the authenticator app to approve the login, it prompts me to re-enable the phone login. I have not made any relevant settings changes. I don’t know why. This feature is automatically turned off
2. I tried to enable it, but got stuck in an infinite loop I click Restart to enable phone login, and it reminds me that I need to access sensitive information and verify my identity. In the end, I still need to authorize using the approval login method. I have no way to authorize on this page, and even if I return to the home page, an authorization popup pops up. Window, click Allow, it will still prompt me that I need to re-enable the phone login, so I am stuck in an endless loop, and I cannot normally enable the phone login function
3. The problem that the authenticator application cannot be used when selecting the sending request page If you select I cannot access my microsoft authenticator application on the sending request page, it will jump to the reset password interface. I have a passwordless account and do not need to set a password, so this path will not work.
4. I cannot delete the Microsoft Authenticator app in account settings I tried to delete this login method under the Microsoft Account - Security menu, and the prompt could not be deleted