Hi There @liorgo81
Thanks for writing in! I see that your essential grid is loading fine in the frontend, so most probably it could be a PHP memory related issue that you’re experiencing in the backend.
Could you please try increasing your PHP memory limit by following our guide here (https://theme.co/apex/forum/t/troubleshooting-increasing-php-memory-limit/16935). Once you increase, you can verify your server configurations by installing the following plugin (https://wordpress.org/plugins/wp-serverinfo/).
Also I would suggest you to check the PHP version running on your server and make sure to use PHP v5.6.x or later to avoid incompatibility issues.
If you’re still having issues, also try disabling some other 3rd party plugins you have except Cornerstone and Essential Grid and see if you’re experiencing a plugin conflict. If the issue resolved, then you can activate your plugins one by one to see which plugin causing the issue.
In case if you cannot isolate the issue, provide us with your WordPress login credentials in a secure note to investigate it further.
Thanks!