Dell Display Manager macOS – DDPM_Installer.pkg won't install

The DDPM_Installer.pkg won't install. All you get is the following error message.

According to the download page it should work with „Mac 11, 12 und 13“ which ist obviously doesn't. It's an ongoing problem as the DDPM never worked and Dell hasn't bothered to fix the macOS version for over a year. The previous version displayed this Error:

Which is the same error in Korean.