Hi @Sheila Mosher ,
I am sorry to hear about your challenge. While this response is coming quite a while after you posted this question, I will still post what I think may be the solution to this problem in the event someone else runs into the same issue and needs access to their accounts secured by the MS authenticator app.
My suggestion would be to go through the account recovery process via this link: https://account.live.com/acsr. This can take up to 30 days and is designed to prevent unauthorized people from gaining access to your account.
In the future, please consider setting up additional security verification methods, like a secondary email address or phone number. This way, if you lose access to one method, you can use another to verify your identity.