Hi,
Thank you for writing to Microsoft Community Forums.
Seems that you are having issues with the Authenticator app as you are not getting the two-step verification code. In such case we would suggest you to uninstall and reinstall the app once and check.
You may also refer this article for more information: How to use the Microsoft Authenticator app
However, for issues related to Microsoft Authenticator app, let me help to point you in the right direction. I would suggest you to post your query in TechNet Support for Microsoft Authenticator app where you will find professionals with expertise on Microsoft Authenticator app and that would be the appropriate forum
Regards,
Aditya Roy
Microsoft Community – Moderator