We recommend that you use the latest version.
Newer versions of macOS include a feature that allows only notarized software to be run on your system. You may see one or more of the following messages when you try to install Watch Face Studio on macOS.
“WatchFaceStudio.pkg” cannot be opened because the developer cannot be verified.
“WatchFaceStudio.pkg” can’t be opened because Apple cannot check it for malicious software.
“WatchFaceStudio.pkg” can’t be opened because it was not downloaded from the App Store.
For more information, see Safely open apps on your Mac.