Hello Amy,
The issue pertains to a tenant lockout, where no other global admin in the tenant has the necessary permissions to login and make changes in your tenant.
To resolve this, we have engaged our Data Protection team through a support ticket. They will reach out to you via email or phone to help restore access to the tenant and assist in resolving the issue.
If the resolution was helpful, kindly take a moment to accept the answer and upvote it 👍 it as a token of appreciation.