Hello hfindley,
Welcome to the Microsoft Community. It looks like you're experiencing account-related difficulties, and I understand the inconvenience.
You are posted under the Office partition, the members under this partition are more focused on solving Office related issues and therefore may be less familiar with the Microsoft account access issues you are experiencing, but I will do my best to provide you with suggestions that may be useful:
If you are unable to log in the regular way, try using the Microsoft Account Recovery form. This requires you to provide as much account information as possible to help Microsoft verify your identity.
Help with the Microsoft account recovery form - Microsoft Support
The process of dealing with this issue is usually designed to be heavily personal, so sometimes it's not appropriate to ask questions in a public community. You can also visit the Microsoft support page to contact online support for further assistance. You can choose to chat online or leave a number to request a call back.
- Visit this website: Contact - Microsoft Support
- Type MSA in the search box.
- Now click Get help, and Select Contact Support or sign in to contact support below.
- Go to the Products and services tab, and choose either Microsoft 365 and Office category.
- On the Category tab, choose Manage Account Security.
- Go to Confirm.
- You can now choose the option of Chat with a support agent on your web browser.
Finally, this community rarely deals with authenticator-related issues, so posting it in an authenticator-specific community may get you help faster.
Here's a link: <Microsoft Authenticator - Microsoft Q&A> to the forum where you can raise specific situations and get help from users or experts who are most concerned about those issues.
I hope this is useful.
Best regards,
Ian - MSFT | Microsoft Community Support Specialist