To import your existing reviews from your Stamped app to Fera make sure your Stamped app is still installed, then follow these instructions:
Navigate to the Content section in the sidebar
Click '+ Add' button
Click the Stamped tab
After that just follow the on-screen instructions.
Now that you have imported all of your reviews from Stamped, it’s time to display them with the Fera app. To do this, you'll need to add a widget to your store.
Check out the Reviews help doc to see how to do that!