Coach 7 does not open on an Apple device such as a MacBook.

MacOS has built-in protection against apps downloaded from the internet. 
You download Coach 7 from our website. Once you have installed Coach 7, you must indicate that you trust this software. 
Go to the application folder in a finder window.
Right-click on the Coach 7 icon and choose Open. (You can also hold down the CTRL button and then choose Open). 
Indicate that you trust the program. Coach 7 will now open. You only need to perform this action once. 
You can achieve the same by indicating in System Preferences -> Security & Privacy -> General, that you trust the Coach 7 app. 
Here you will find the explanation from Apple.

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