I had to order a complete new dispenser from Appliance Parts Pros. The dispenser is very poorly designed so that the tab that holds the door shut in the first wash wears off and of course you have to buy a complete assembly.
The repair video was excellent and after watching it I was able to quickly and easily replace the dispenser. You will need torx head drivers to remove the screws from the inner door and a very small nut driver, I think it was 1/8".