Hello @Michael_GuntherMaher,
Thanks for contacting support, I’d be happy to assist here. Have you tried rebooting your PC after installing Roon? I would try to open the App again once you have rebooted the system to see if that helps.
Are you by any chance trying to run Roon from the .dmg file instead of installing it as per this thread?
Please let me know if that helps.
Thanks,
Noris