I also have a Macbook Pro using MacOS Sierra and it shows the option to Save to Cloud in the File menu. However, that option isn't even visible on the File menu on the iMac using Mojave.
Any solution to this glitch?
I am using the CGS on a MacOS mini (2018) and I see the Save to Corel Cloud in the File menu. When I click on it, the dialog for my Corel login appears, which would allow me to save the document to Corel's Cloud storage.
You may have to perform a reset of the Graphics Suite (Hold down the space key while opening DRAW) and respond to allow the factory defaults.