McasShadowItReporting / Cloud Discovery in Azure Sentinel

Hi!

I´m trying to Query the McasShadowItReporting Table, for Cloud App DISCOVERYs

The Table is empty at the moment, the connector is warning me that the Workspace is onboarded to Unified Security Operations Platform
So I cant activate it here

I cant mange it via https://security.microsoft.com/, too 

The Documentation ( https://learn.microsoft.com/en-us/defender-cloud-apps/siem-sentinel#integrating-with-microsoft-sentinel ) 

Leads me to the SIEM Integration, which is configured for (for a while) 

I wonder if something is misconfigured here and why there is no log ingress / how I can query them