Yes, we added support for the ACF PRO Gallery field in version 1.1. Please check the version 1.1 release post/video to learn more.

The Divi Dynamic Helper plugin does not add any functionality to 3rd party modules created by other developers. It would be impossible, and also not in our best interest. Our plugin only adds dynamic content features to Divi.

The Divi Dynamic Helper plugin adds the missing dynamic content icon and functionality to the existing Divi modules using advanced programming code in the backend. 

Using custom fields has many benefits, depending on the type of site you are creating. Custom fields are essential for many sites that use custom post types. The main thing is when the page or post has lots of content that needs to be updated by a client, and using custom fields prevents anything from getting messed up in the Divi Builder layout. It can also be a very convenient way to avoid opening the builder and searching for the module to make changes.