Display custom posts by ID

Enable the post type from the Divi Blog Extras setting. In order to do that, go to WordPress Settings >> Divi Blog Extras >> Custom Post Types >> Enable Custom Post Types in Module.

Check the post type you want to enable and save the page.

Then create/edit a page in Divi builder, add Divi Blog Extras module to it. On Content tab go to Query section and select the post type. Then scroll down and enter the Post IDs in the given field.