Copy FullSession code that shows on your setup page. Go to your BigCommerce dashboard Click on Storefront section

Copy FullSession code that shows on your setup page. Go to your WIX Dashboard Click on Settings Go

Copy FullSession code that shows on your setup page. Open your Shopfiy dashboard Go to Online Store section

Copy FullSession code that shows on your setup page. Open your WordPress dashboard Go to Appearance section. Open Editor