First, make sure you've turned on stories insights from the app.
We are able to access your stories posted from the day you connect Rival IQ to your Instagram Business Profile and onward. Due to API restrictions, we don't have access to historic and "live" stories data.
Once connected we periodically update your dashboard with your new stories. When your token expires, we are not able to retrieve stories, so make sure it is up to date to analyze your full library of stories in Rival IQ.
Is your handle not showing up? Make sure your account is an Instagram Business Profile.