MAC OSX 10.11.6 EL CAPITAN doesn't work


I didn’t speak very well English. Hope you’re going to understand me.

I Just download Activity Watch to test it because I’m looking for one that calculate everything, pagebrowser, app, files. The best will be to stop calculating when I’m not in front of my computer or at the phone. And this app seems doing that.

Unfortunately, the app didn’t want to start on my mac. I install it (it’s in my Application File)

I press “ctrl” to open it. I allow the app from all developers but it still doesn’t work.

My (old) Mac is on (unbreakable) 17 Inch upgraded from OSX 10.6.8 (Leopard) to OSX El Capitan 10.11.6 and some RAM boost.

Thanks to everyone who could help me.

Best regards