In the admin area, can you see the stream in the JFBConnect -> Channels area? If you can, then that would indicate something is preventing it from displaying properly on the front.
If you don't see the stream when editing your channel in the backend, then there's some reason JFBConnect can't fetch the stream from Facebook. Usually, in that case, there should be an error message describing the issue fetching the stream. If you see an error and are unsure how to solve it, please let us know what that is.
Thanks,
Alex