I ordered the Lightwedge3 with footprint and the poles join at a plastic center hub that has a "knob" at the bottom. The tent has a strap at the top with a piece that slides over the knob. I personally haven't had any problems with the connection, although I haven't tested it in rough conditions yet.
The hub is a good indicator as to whether you are installing the poles correctly. On my first attempt, the "knob" on the hub was pointing towards the sky and not the tent. It needs to be facing down so the tent has something to grab.