Catia does not Start

Hi

I became a Member of the ALWAYS ON programm so I have done all instructions and installed the 3DEXPERIENCELauncher as well as Catia.

My Problem is that I can not open Catia, because everytime I launch Catia I get the Error " Unable to retrieve Catia V5 Application".

I installed and deinstalled everything multiple times and also restarted my Computer after every installation or deinstallation.

Does anyone know a Solution ?