You can install the Prestashop module as per the following instruction:
After login to the website, go to Admin -> Modules -> Add new module to install the module
Please select the ( zip archive of emcapp.zip) and Click `Upload this module`
Alternatively you can install the module manually through following steps
Unzip the downloaded module archive file
Copy the folder to “YOUR_PrestaShop_ROOT/Modules” folder and go to admin and click ” install ” on emcapp