Hi @Keith Anderson
Because "Office Mac" tag is mainly for general usage issues of Office for Mac, but your issue is more related to your account and cancel subscription.
Your issue is out of my support scope. Thanks for your understanding.
Regarding identity verification issue, that you are unable to log in to your account, I suggest you post a new thread in Q&A forum with the "Microsoft Authenticator" tag.
Besides, if you have turned on two-step verification, did you set alternate methods to get a verification?
- If so, I personally suggest you recover your account. For more, please refer to: Help with the Microsoft account recovery form
If you can sign in your account, but still can't cancel your subscription, I suggest you contact to Microsoft support: https://vsa.services.microsoft.com/en-us/v1.0/?partnerid=8520E38F-0A89-49CC-80ED-5E40DA61C206&product=office&issue=Billing-CancelSubscription&authtype=msa&modality=callback
Hope the information could help you.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.