Problem to install indicators in MT4 for Mac.

 
I tried to install several indicators in the metatrader4 on my Mac Big Sur but they don't work. I right-clicked on the application as per the guide on the metatrader4 site and chose "show package contents", then I searched for the indicators folder and simply dragged the indicators. Then I reset Metatrader4 but they don't appear on the platform. Can someone help me? Thank's.