The setting you want is "Create New Users" set to "No". You can read more about this setting in our configuration guide:
www.sourcecoast.com/extensions/jfbconnec...ration-guide?start=2
Also, please post with whichever account you purchased your subscription for. We prioritize support for those with active subscriptions, which the account you're using above does not currently have. If you feel that's a mistake, please let us know.