If you downloaded Valentina Studio from the Mac App Store (MAS) or from Paradigma Software you will find there are small differences.

A major difference between Valentina Studio for macOS from the MAS is that licensing occurs based on your MAS transaction.

For this reason, the version you download from the Paradigma Software website is different. The Paradigma Software website version has a menu item for registration and licensing. After you purchase your license, you will get a serial number that will serialize Valentina Studio and turn it into Valentina Studio Pro.

The MAS version relies on the licensing system of Apple. If you re-download from the Mac App Store, it will use the MAS licensing.

There Paradigma Software website version and the MAS then are not compatible with each other for licensing purposes.