Hi Chris,
I tried to access your website dashboard, but unfortunately, the user that you shared does not have permission to view Pro options and I have only access to the user profile.
Please make sure that the user is admin.
I checked the front end of the website and found out that you added the given suggestion correctly and the footer is full width now. But you used a Global Block to add all other features, so you need to go to the Global Block that you used and make sure the section that you added there is full width.
To make your global block full width, go to the section options that you added in the global block and turn off the Global Container options:
You can even force a 100%
width if you want using the Width and Max Width options.
Thank you.