Azure AD: Monitor Users and Sync Interval

Is anyone using this already?

We had a working Azure monitoring (a few VMs). So the app in azure AD with their roles is already configured. Now I want to monitor Azure AD Sync Status for our Office 365 Business Essentials users.
I updated cmk raw to 1.6.0p9 and installed the Azure AD: Monitor Users and Sync mkp.
Now the Azure Agent Info service tells me “Graph client: Insufficient privileges to complete the operation.”

<<<azure_agent_info:sep(124)>>>
agent-bailout|[2, “Graph client: Insufficient privileges to complete the operation.”]

We have two Azure subscriptions. For the " Access to Azure Active Directory" Subscription I am not able to add roles, “The current subscription does not allow you to perform any actions on Azure resources. Use a different subscription.”. But I am the owner if this subscription.