Error: User is not authorized to query the management service

I was able to work around this issue.  Here is what I noted:

1.  Regardless of account, you don't seem to be able to delete existing tenant groups once their created using the Remove-RdsTenant account.  I always get the "user is not authorized to query the management service" error no matter what I do.

2.  Also, one of the steps I may have missed the first time is that the tenant group name you create via PowerShell has to match to what you create via the Azure portal.  After creating a new tenant group in Powershell separate from the default one, it worked when I referenced the new tenant group name in the Azure portal.  Hopefully at some point, Microsoft will have an end-to-end solution for creating the tenant, tenant group name, and host pool all within the portal.