Error installing SCDPM 2022

Hello community

I don't understand the world anymore :-(

Been trying to install SCDPM 2022 for a few days. Unfortunately always without success.

Situation:

DP1 Windows Server 2022 current version with all requirements installed. Also SSMS.

DB1 Windows Server 2022 current status. SQL Server 2022 corresponding database set up. As well as reporting services.

All of my devices based on the German language

ERROR:

DP1 see picture DP1

DB1 see picture DB1

What am I failing at?

Thank you for your help.

Greetings mame

DB1.PNG
DP1.PNG