These instructions will make the widget appear on EVERY page within your site. However, this does not necessarily mean that all pages will be protected. You need to indicate which pages and content should be protected on the Paywallz portal
Log into your Squarespace Account.
Your Squarespace user account needs to have the Contributor role for the site you're going to be making changes to.
Click Code Injection
In the top box, titled Header, paste in the code snippet that was generated for you from the Paywallz dashboard (Installation > Sites).
Once this is done, you just need to save these changes.
You're all done. Now you just need to confirm that you did things correctly.
Open a new web browser tab or window and type the URL of your website... the Paywallz "Login" or "Share" widget will be visible.