In a major upgrade Divi have updated their builder to give a more visual experience in back-end editing.
The sceenshot shows where the new editing spots are.
1. Using the Old Editor
Click the cog wheel icons below the purple Divi builder section to access the old editor.
2. Using the New Editor
Click the wee icons ABOVE the purple Divi builder section to access the new editing system.
Switch Back and Forth
On a per page basis you can currently choose which editor to work in.
Or you can turn the option on and off globally. See Screenshot…