Ok, listen very closely.
You know how every time you deliver a package, you have 3 option answers? Well, turns out that there is one correct option, and 2 wrong ones. You have to pick the correct option EVERY delivery. That's why you can click "Deliver package." Its so that you can go through them again if you missed any. Here is a guide I found a but ago that was recently updated:
https://www.reddit.com/r/Porn_Games_2D/comments/1oj8tfj/full_guide_of_janitor_of_love_v112/