i think I might of found the culprit to the leak. Not 100% sure. That plastic piece that was mentioned earlier is secured. A video last night I watched the guy mentioned this part on the hatch. His had the nipple. My shit looks destroy and not in place.
I realized mine was gone just a few days ago. The water would leak onto the parcel shelf when I opened the hatch. I looked at the drain hole and sure enough the rubber piece is missing and the tube is misaligned. You can grab it at the dealer, the part # is 512 827 861 A