There are 3 components to triggering the copier:
- The date where Lara runs out on you
- Groping Lara at 6pm in the office
- Finishing the maid event
The two places where I would guess most people are stuck is either #2 or #3 above, due to the following:
- Groping Lara is optional and easy to miss... as you have to be in the office specifically at 6pm, click on the "View" icon on her chair which can be hard to see, and pick the groping option; as some people mention about the "good path", I would guess they might not grope her as it gives a negative animosity... but that is necessary to trigger the copier
- Finishing the maid event means getting Artemis to actually wear the maid outfit, and NOT simply getting the maid's outfit from her; since the user can indefinitely postpone Artemis showing off the maid outfit (get outfit before confronting Andrea or choosing "Let it go" + "Tell lthe truth"), that means as long as they keep this event in the "I'll force you to wear it later" step, the copier will not have satisfied all requirements.
Once you have all 3 requirements met, the copier should trigger after 11am on a day that Alexis does not visit. If you skip time for a few days and it doesn't trigger, you likely haven't met all the requirements yet.
As far as the rest of the date, that's kind of a problem with current design -- it lets you on a date fairly early in the game, but the continuation only occurs AFTER the copier is delivered... so the user will be sitting in limbo on this one for a long time, before they can resume the continuation (Lara will show up in your office during her shift to say sorry about leaving you hanging, but I can't remember off the top of my head what all the conditions are for this one).
Lastly, I believe there is a problem with these triggers on 0.17 and you'll need 0.171 to fix these problems -- you can get 0.171 on his Patreon page, should be a post dated January 15th. Carrying over the saves shouldn't be a problem, I tried this myself as I got stuck on these as well.