Hi, I had the same problem, it is because your project uses epics instead of the old stories, convert your stories to epic stories or you can change as following:
“If you are the Scrum Master of your app, you can go to the General Settings of the app and select Epics as your project management tool - this setting determines where Studio Pro will pull the stories from.”
Thank you, I tried switching back to project Stories and Refresh in Studio Pro solved issues too.Thank you, I tried switching back to project Stories and Refresh in Studio Pro solved issues too.