After much research, I was able to get it to look like the demo. Here is what I did:
I went to Widgets, then added a Text box to Footer Column 4.
Head over to your Mailchimp account. Once you log in, on the left side, there should be one that says Lists. If you haven’t created a list yet, go ahead and do so now. Once done, to the right of your newly (or existing) list, there is something that says Stats. Click on that arrow and go to Signup forms. Then select the one that says Embedded forms. Choose Super Slim and on the left side where it says Form options, go ahead and uncheck “a title for your form”. Copy the code given and head back over to your site. Paste the code in the Widget Text you had created earlier in Footer Column 4.
You will have to delete some of the code and add some other stuff. Please see images attached so that you can compare.
Sorry, my explanation is a bit weak. Super exhausted after staring at the screen for so many hours.
Hope this helps.