Hello James C
As you have all the necessary permissions, but you are still facing issue then I would recommend you raise support request to Microsoft 365 for business.
- Go to the admin center at https://admin.cloud.microsoft. If you get a message that says you don't have permission to access this page or perform this action, you aren't an admin. For more information, see Who has admin permissions in my business?.
- On the bottom right side of the page, select Help & support.
- Type a question or keyword into the text box. If you get a drop-down list, select the one closest to your question, or continue typing your question, then press Enter.
- If the results don't help, at the bottom, select Contact Support.
- Enter a description of your issue, confirm your contact number and email address, select your preferred contact method, and then select Contact me. The expected wait time is indicated in the Contact support pane.
Phone support: For the most current support phone number in your country/region, see the global phone numbers list. If your country/region isn't listed, select a neighboring country/region or dial the United States support phone number.
In most countries/regions, billing support for Microsoft 365 for business products and services is provided in English from 9 AM-5 PM, Monday through Friday. Local language support varies by country/region.
Technical support is provided in English 24 hours a day, 7 days a week, and in some cases, in local languages as noted.
Admins have your account details ready when you call.
Thanks,
Suchitra.