How to add an Image in the Divi Picture Gallery
PREPARE IMAGES
UPLOAD TO MEDIA LIBRARY
UPLOAD TO the PAGE with Divi
> Dashboard> Pages > Choose your Gallery page
> Hover over chosen page: > Click Edit
> Click Edit with Divi Builder
> Hover over Image Gallery > Click gear icon on black menu for modules
> Gallery Setting will open in Pop Up Window
> Content Tab> Scroll to bottom of Gallery > Click grey + plus Icon
> This opens the view of the Media Library
> Add a TICK to new image on top right corner of the image, you can choose multiple images
> Click SELECT (Blue button on the bottom right)
> Click green TICK on bottom right in Gallery Setting pop Up
> Open PURPLE PAGE MENU at the bottom of screen (purple circle with three dots)
> Click SAVE in green BUTTON to the bottom right of the screen
I found similar instruction with SCREENSHOTS here:
I found a similar instruction here