Hi Thanks for the question.
Send me the model # XXXXX will look at the door and be able to help you better.
Is this your hinge ?
Ok.lay the door on the floor and use a cloth on your hands , push the top part ofthe hinge to almost touch the bottom part and lock the hinge with the gold locking clip.
This will lock the hinge .once locked you can install the door.once installed unlock the hinge.
Remember if you want the doors off again. lock the hinge first then you can pull the door out