Download Stock + Pro from our website if you haven't already (direct link).
Unzip the downloaded file in ~/Downloads by double clicking on it. Once unzipped, double click on it again to open the Application.
At this point, the direct download version will try to automatically detect your MAS receipt. If it does, it will ask you to complete a $0.00 checkout in order to generate a new license key for you.
If the direct download app does not automatically locate your MAS receipt there are a few things you can do to help resolve the issue.
- Download and open v2.7.2 (or later) of Stock + Pro from the Mac App Store. It is important to launch this or a later version from the Mac App Store because only these versions will set up the migration process. If you are attempting to migrate from an earlier version, the receipt will not be moved to the correct place on your Mac.