Using the Divi Footer Injector can sometimes be a bit confusing the first time around so we have a step by step setup guide here to help you in setting up the plugin.
Get setup quickly and easily by following these instructions.
Install and Authenticating the plugin.
Footer Injector Plugin can be downloaded, installed and authenticated using the following article https://www.diviframework.com/knowledgebase/diviframework-dashboard/
Go to the management menu inside Divi to edit the Footer item
Select a Global you want to add to your footer on every page
Save the item
You will now have your global element loading on every webpage.