I purchased a subscription for Photoshop a few days ago, and after a few days of trying and a few hours on the phone with Apple Support...here I am. I have a MacBook Pro that I initially was using the Mojave operating system. After contacting Apple Support, they recommended that I upgrade to Catalina, which I did. I am able to download the installer, but when I open it up and then double click the icon to install, the app pops up on my dock, jumps for a few seconds, and then disappears. I have tried deleting and reinstalling several times, as well as trying to install in safe mode. This is only an issue with Photoshop. I was successfully able to download Creative Cloud with no issues at all.