Unfortunately, Sumo is not compatible with either Wordpress.com or Wix websites.
If you must login to your website using Wordpress.com, it's a Wordpress.com website and Sumo will not work.
If your website is self-hosted (Wordpress.org), Sumo will work for you. Check out our guide for help installing Sumo on WordPress.org sites HERE. :)
If your website is a single-page app we don't guarantee compatibility with all Sumo features. We're looking to improve single-page app compatibility in a future update to Sumo!