You need to align the door. Open the door, loosen the hinge retainer screws on the door so that the door is moveable but not loose. Close the door and use a 1 1/2 or 2 inch putty knife to move one edge or the other up or down. This will take a bit of fooling around to get right. When it looks good, gently open the door and retighten the screws..
2000 Dodge Grand Caravan SE