Mac Work Around (Patreon)

You need to  launch Terminal [Applications/Utilities], then type or copy/paste chmod +x [including a space after the x] 

then drag the app you need to change the perms straight onto the Terminal window, which will fill in the correct path  

hit Backspace once, as the last task will add an unnecessary space  

Then you need to add the sub-path to the actual executable inside the app, so copy this & paste it onto the end of your current Terminal line /Contents/MacOS/*

Hope this helps