To add or replace your disclosure, navigate to Profile >> Disclosures:
Here is an overview of the Disclosure page:

Website Disclosure (or Landing Page Disclosure): This disclosure appears on your website or landing page footer
Email (optional): If no content is entered here, your website disclosure will appear in your email footer
Leaving Site Disclaimer (optional): This option only applies to subscriptions that include a website. The content you add here will appear as a small pop-up when visitors on your site click a link that will take them away from your website:
Once you update or add your disclosure, click "Publish" to send your disclosure to compliance.