Lumen not working after upgrading from UE5 Early Access to UE5

I upgraded my Project from UE5 Early Access to the newest Version 5.0.0.
Now my problem is, that I can’t get Lumen to work, even tough it worked before in the same Project in the early Access version.

The only thing I did was opening it (it created a copy) in the new UE5 and then activated Lumen again in the project settings because it automatically got deactivated with upgrading the project. Then restarted UE5.

These are my Project/ProcessVolume Settings. Am I missing something? I’m not entirely sure if Lumen is deactivated or just not set up in the right way. But the asteroids look totally black on the backside, so I guess there is no Lumen at all…

If you have a very punctual light and no places to bounce… asteroids are black chadowed in real world too.

Anyway, as in any project I’m not sure if something is working: open a new default map, and place some objects, mirrors and lighting with some source radius, to check if it’s working. And even some colorized materials, to check bounding lighting.

Regards!