Apple has added additional security measures on Mac OS X Catalina (pushing developers to put their app on the Apple App Store). After installing Ranch Manager on Catalina, you must start the app in a different way the very first time. Here’s how:
1) Install the App/Update as suggested in the instructions.
2) When you get to the point of starting it up the first time: Press and hold the “Control” key down on your keyboard and click on the App’s icon. From the popup menu select “Open”.
3) A warning will pop up, select “Open” again, to confirm you want to open the app.
4) That’s it…the app will open, and you will not be prompted again (until you update/download the app again).