Step 2: The Squarespace 7.0 Sitewide Connection Before the buttons can work as popups, you must inject Payhip’s core software script into her website once. Log into her Squarespace 7.0 dashboard. From the Home Menu, click Settings > Advanced > Code Injection. Go back to Payhip, click Developer or Embed in her account settings, and copy her unique Global Payhip Code. Paste that code directly into the Header text box in Squarespace. Click Save at the top left. Her site is now fully integrated with Payhip.