Hi LynseyF_417!
I am Shakiru, an independent advisor and a user like you, and I am glad to be helping you out today.
First, to avoid misunderstanding, this is a public user-to-user support forum. We're users helping other users. We do not work for Microsoft and have no access to any user account so there is nothing we can do or check from within the forum. We have no input on Microsoft's policies, procedures, or design decisions.
Since it is an onmicrosoft.com domain (Business) account, you require Microsoft 365 Business Support.
I can guide you through the instructions and help you reach them correctly.
You need to create a Support ticket to contact Microsoft Business support:
https://docs.microsoft.com/microsoft-365/admin/contact-support-for-business-products
Global Customer Service phone numbers (Business users)
https://support.microsoft.com/help/c0389ade-5640-e588-8b0e-28de8afeb3f2
Let us know how it goes, we're here to help you further if needed.
Thank you
Best Regards,
Shakiru