Hi Cristi, we are converting all of our features to a new UX platform incrementally. Unfortunately when one is converted to the new platform, any of the older pages can't launch that until they are also converted as the two aren't compatible. So in this case we had to have it launch the old one until we can get Gradebook done which is going into development in the next few weeks but will be a several month project. If we didn't release them incrementally you wouldn't be able to see any new features for a couple years as most of them touch each other. Sorry for the inconvenience on this one but it will be coming!