Sorry for the delayed response.
Sveltoss, the suggestion I had was to take the Fanpage ID of the site you mentioned that worked and use it in the JFBConnect FanPage module to see if it doesn't work there. That way, we can determine if it's the fanpage itself, somehow, or JFBConnect.
I just did a test with the PokerPro fanpage, and I can get the avatars to show up:
sourcecoast.com/jfbconnect/demo/index.ph...nt&view=article&id=4
The only difference I see in our 2 configurations is that I have "Stream" set to Yes. If I turn it to No, the avatars dissappear as well. If you can try changing this setting to see what happens, we'd love to hear your results. Stream should not be required (I don't think) to see avatars, but we'll be investigating it further.
Thanks,
Alex