Tank you so much fore support. I still can not make it work. I tryed another versjon, now it opens. But I am not getting the right working space og connection with the program. I have a macOS, Big Sur, versjon 11,4. Maby it to new to the programs? Also I did not realy find any way to resett prefrensen. Only onle place , if that was what. you meent? The way it is now I rely cant work in the program .
Sorry to hear about your experience. In addition to the helpful suggestion given by @War Unicorn you may try the Creative Cloud Cleaner Tool to remove the existing app installation & reinstall once done.