You don't need to do anything more with your App at that point. JFBConnect will auto-configure everything for you so you don't have to understand all the settings there. Just take note of your App ID and Secret Key and plug them into the Autotune utility.
For full instructions on setting up JFBConnect, please make sure you check out the
JFBConnect Configuration Guide
. The Autotune information starts on the second page.
Hope that helps, but let us know if you run into any other issues,
Alex