A new update is highly recommended for those running MacOS 10.13 and greater.
This new version corrects an issue that impacts how the version is identified in the application impacting in-app updates allowing incompatible versions to be downloaded.
For those running MacOS 10.13 or later, download the latest version using the "Try" link for your licensed product at https://www.monkey-tools.com.
For those running version of MacOS prior to 10.13. Ensure you are running the correct version.