@CelesteWalz -- I apologize you are having an issue editing your shortlist story. As mentioned above, the classic templates are in extended support, which means they are not under active development but in general stories should continue to be editable.
I'm not able to reproduce the issue you've described here on any of my shortlist stories. I would recommend that you please contact Esri Support if you continue to experience this issue and they can help you troubleshoot this.
Owen Evans
Lead Product Engineer | StoryMaps