To enable cookies for Safari on your device, follow the instructions and then try to enroll again.
1. Go to the Home screen by pressing the Home button or by unlocking your phone
2. Select the Settings icon
3. Select Safari from the Settings menu
4. Select Accept Cookies from the Safari menu
5. Select From visited from the Accept Cookies menu
6. Press the Home buttonm to return to the iPhone/ iPad home screen
7. Go back the browser and refresh the enrollment page