Hi Cathy, 

I've solved the problem by allowing access to the application using the terminal. I used these videos to help me: 
https://www.youtube.com/watch?v=x7W1Mudm4_I
https://www.youtube.com/watch?v=weKOb5OiFvw&t=43s

But I still have a problem, my computer has access to the application but it doesn't run, the icon "jumps" as if to launch itself, which is usual on Mac, but in the end nothing happens, it doesn't open.

Thank you in advance for your help,

Arnaud