If your SquareSpace's theme uses AJAX, you must disable it before you install ReferralHero, otherwise it won't work. You can read the instructions here.
Step 1: Login onto your Squarespace account, choose your website and go to the Settings.
Step 2: From the Settings menu, navigate to Advanced > Code Injection
Step 3: Go to your campaign dashboard > Installation instructions and copy your Tracking Code
Step 4: Paste the ReferralHero Tracking Code in the Header section text area and save your changes.
Step 5: Go back go Squarespace dashboard and click Pages.
Step 6: Choose the page where you want to install ReferralHero and click Edit.
Step 7: In edit mode, add a content block Code.
Step 8: In the content area, paste <div id="maitre-widget"></div>
Step 9: Save your changes and the embeddable widget will appear on the page.