I made a video quiz for a Youtube video using Canvas Studio.  It seemed to work well after saving and testing it out but I wanted to go back in and change a question and some answer choices, but it wont allow me to do that.  It kept showing me an error screen.  I even created a new quiz on a different video just to see if it happened with that video but it worked great and I was able to go back and make edits. So what is going on?  How do I fix this? Its extremely frustrating.