Under the dashboard, you should have a blue “Certificate” button, if the course has been completed.
This can be a result of a slower internet connection. You can lower the streamed resolution of the video which should make it play without stopping. You can do this by clicking on the gear icon, and choosing the desired quality. Higher numbers require a good internet connection to stream properly.
This can happen at times after we upgrade the server applications. It is usually caused by a browser caching issue and properly clearing the cache clears it up. Follow these instructions on clearing your cache. How to Clear the Cache and Cookies in Your Web Browser | Information Technology Services (uiowa.edu)
After logging in at https://defenderschool.com/my-account, you can start the course directly under the “Dashboard” or “Courses” link. After clicking on the course, it will display a list of lessons. Click on the first lesson, then the first topic to get started. After watching the video, click the “Mark Complete” button, then the “Next Lesson” or “Next Topic” button.