I am trying to register my child and I get this error message
Exception: This message has already been processed. This could indicate a replay attack in progress.
I am sorry you are facing difficulties accessing the Enrollment form. Our Enrollment forms are designed to work best with Google Chrome or Firefox internet browsers. I recommend using one of these to access the Enrollment form.
If you already accessing the form using these browsers, I recommend clearing the cache, browser history, and cookies of the browser. I have attached an article here that will guide you through the process of clearing cache, cookies, and browser history.