This could be a security feature you have enabled, or that you are using a really outdated browser. This is a single page application, meaning that it requires javascript to run.
To provide the best possible features, Unacast also utilizes some of the latest HTML5 technologies. That means that you should also use an evergreen browser. That is a browser that always updates in the background so that all features are available and good to go. If you have any questions or anything that is unclear about this, do not hesitate to contact us at support@unacast.com.