The default Footer of the Divi theme consists of two sections straight out of the box.
Top Footer, which displays the WordPress Widgets called Archive and Categories
Bottom Footer, which displays the Copyright and the Social Icons
Remove/edit the WordPress Widgets displayed in the Top Footer Area
Go to WordPress Dashboard → Appearance → Widgets
Expand the Footer Area #1 widget area
Remove the existing widgets or add new WordPress widgets
Pro Tip: The Top Footer area accommodates 6 columns of widgets, each with a unique widget area name:
Footer Area #1
Footer Area #2
Footer Area #3
Footer Area #4
Footer Area #5
Footer Area #6
We can control the Top Footer's number of columns from Appearance → Customizer → Footer → Layout → Columns Layout.
Change the Copyright text from the Bottom Footer area
Go to WordPress Dashboard → Appearance → Customize → Footer → Bottom Bar
Add your custom copyright text
Set the links for the social icons displayed in the Bottom Footer Area
Go to WordPress Dashboard → Divi → Theme Options → General Tab
Set the Social Platform URL for each of the following options:
Facebook Profile URL
X (former Twitter) Profile URL
Instagram Profile URL
RSS Icon URL
Pro Tip: If you don't want to display an icon, make sure no URL is set.