Hey There! This is what my CC2020 PS screen shows for how to launch the PSP app. I'm assuming once you added the plug-in as directions go; you restarted your system? & What OS are you using? Windows or Mac? Have a good week! Lynn C.
For Mac Users (Catalina): If the original .dmg does not install the plug-in for PS or LR apps; find the "Plug-In Install" app within the Print Studio Pro folder and launch. It will open to allow browsing for the PS or LR apps and it "does" work. Howe...