Our Custom Post is not found in divi

For the category archive and no post types, check out https://docs.pluginize.com/article/17-post-types-in-category-tag-archives

For the Divi module, I am not sure exactly what is needed on that front, or if I’ve been informed in the past, I’m admittedly not recalling. Have you reached out to Divi support for that part? They’d know much more readily than I will, outside of doing some googling.