Hi Harun,
Thank you for the information. I manage to access the FTP account. I went to the file below:
wp-content/themes/pro/cornerstone/assets/dist-app/js/cs-vendor.js
and changed the content of it to be the expanded version and not the minified one. Then I checked your website and it still loaded the minified one!. I cleared the Automtimize cache and disabled it. And also I disabled the wp-optimize plugin. Then I checked that again and it is still showing the minified one. Then I renamed the file to /cs-vendor1.js and it is still showing the minified one!
This shows that there is a heavy caching going on your installation which causes the problem. You need to check your server and clear any cache you might have so that the browser can load the latest changes.
Get back to us as soon as you managed to fix the caching issue.
Thank you.