Jacky,
In the Social Configuration -> Misc tab of JFBConnect, there's an "Alpha User Points Integration" setting. It was disabled. I just enabled it. Please try again, and that will hopefully get you going.
We have great documentation for some features, but we'll be the first to admit our AUP information is lacking. Hopefully that's all the problem was, but if you still have issues, just let me know!
Thanks,
Alex