If Your Are Using Shopify
If you are using Shopify and have downloaded the app from the Shopify App Store, there is nothing more you need to do. Simply activate your banner and you're all set.
How To Manually Install The Code Snippet
Start by creating a banner, popup, or snackbar. Next, go to the settings page and click the "Widget" button. Paste the snippet within the <head></head> tags or closing </body> tag of your website.