The footer and sidebar can be edited in the Divi library.
Go to the home page of the Instagram feed plugin on the menu. Click the big blue button to add your account.
Save the page.
Then go to the customisation tab and set the columns to 5 and photos to 5 with 10px padding.
Uncheck all tick boxes on the way down and save the page.
Script font import
On the home page, I have labelled the first module where you can upload a script font. Go the the builder tab and import your font and save the module.
Create a menu in the menu page and save.
Go to the widgets page and create a custom widget area. Call the widget ‘custom footer widget’ and add your menu by dragging a navigation widget to the custom sidebar, select the menu that you have just created in the menu page and save this.
Go back to the Divi library and edit the sidebar module in the custom footer, selecting the custom widget you have just added.
Save the layout.
Sidebar for the blog feed (at the bottom and posts)
On the widgets page, remove all widgets that are added to the main sidebar and 1st footer sidebar.
Add a text module to the main sidebar and paste the following shortcode to the widget:
Remove the asterisks above before pasting into the widget. I have added the asterisks, so that the code can be copied and pasted.