Thank you for the hint.
I suspect it were in access rights. I already tried to grant full disk access to DPP, but without luck.
Once you confirmed the feature is working, I looked more closely. There was a conflict in user inteface settings between the old image of DPP restored from TimeMachine and the new DDP installed over. In DPP Preferences/View Settings I checked "Reset user interface"/Restore defaults at startup/Reset all user interface settings and after the restart everything works.
Thank you very much for support.