Hello @itfitspt,
Thanks for asking and I am sorry for the trouble you are facing with Pro.
Upon deactivating all plugins, content builder is loading then I think it might be the case of plugin conflict. Have you tried to reactivate one plugin at a time to narrow it down?
That being said I think you may be running out of your memory. You can try increasing your PHP Memory limit. You can do this by editing your wp-config.php file which can be located under the root of your WordPress installation.
Add the following lines into that file.
define( 'WP_MEMORY_LIMIT', '512M' );
define( 'WP_MAX_MEMORY_LIMIT', '512M' );
Along with that please check the following as well.
- Make sure that you’re running at least PHP v5.6.x or later to avoid any WordPress related incompatibility issues. If you’re not sure what your server configurations and settings are, install a plugin like WP-Serverinfo (https://wordpress.org/plugins/wp-serverinfo/) and check your server info by head over to Dashboard -> WP Serverinfo area.
- Check your
PHP Max Execution Time
and set it for 300 for optimal usage.
If above solutions does not work for you, please share website login details (url/username/password) in a secure note for us to take a closer look.
Thanks.