Whirlpool Gold Quiet Partner

The soap dispenser door on my dishwasher popped on and now I can’t figure out how to put it back on. It includes the plastic door, a plastic pin that holds it in place and the small spring. Am I missing a piece or can anyone try to discribe to me how it goes back together? I can’t get it to go back on so it springs open.

Thank you!!!

Remove the inner door and look at the breakdown picture on this parts site to locate missing parts.