vRO 7 does not show up in vSphere Web Client

Hello everybody,

I've deployed a shiny new vRO 7 appliance in my lab. I added the vCenter instance to the vRO config and registered the vRO extension. I can see in the MOB that the vRO is registered. vRO uses the "vSphere" authentication mode and the vSphere Web Client user is member of the vRO Admin group (domain global group in my AD) . But unfortunately the VRO will not appear on the Web client.

vRO appliance: 7.0.0..16989 Build 3310032

vCenter appliance: 6.0 Build 3339084

Any hints where I can look for additional information (Logs etc.)?