The posts should be made automatically, as you noted. If they aren't, there are a few things to check to determine if an attempt was even made and what may be wrong if so.
First off, the Requests area is not the correct area to check. That area is for Facebook Requests, which are like invitations users can send from your site. To look at the send history for an auto-posted article, please go to the Channels area and use the 'History' tab to see what JFBConnect has tried to auto-post. The 'Response' column should usually be empty if the post happened without issue. If you see a message there, try to fix the problem (or let us know the message and we can help investigate further).
I hope that helps, but if not, let us know.
Thanks,
Alex