You don't need to push the box upstairs, just push it to the right on the red trigger.
Viewing post in Update10.22.2020 DEMO 0.93 comments
I did that... and went and stood on the switch above.. and the 2 parts of the switch activate.. presumably to turn on the lift.. but then i get off.. and it it doesnt work.. so the robots at the bottom occasionally walk on to the lower switch.. so if i can get the box up the stairs.. eventually they will step on the lower one.. and i can then presumably get to the terminal.