With the trunk window open, you will see a pin with a hole, kind of like a sewing needle but much larger in size of course. This is where it latches to. With a pair of pliers, turn the latch/pin either clockwise or counter clockwise to see if that helps catch the latch again. Also ensure the rubber stoppers on both the left and right bottom corders are also there. You can adjust there too. It seems like it just needs adjusted to me. Then you should be good to go!