store tab >>>furniture tab --> it will either be material market for exchange or scroll down to home furnishings. Use home/material box to exchange for tier up pieces.
I still do not see this. I know I can exchange home credits for a furniture box, but I do not see a way to exchange say "coffee beans", an item I won by collab, for a box. I am trying to complete the story "furniture stories" and it does not seem like there is any possible way to do this. Is it possible the marketplace section is not in the production version of single city?
As Police Said, to trade the coffee beans that you receive from collabs at coffee shops you will need to go to Store>Furniture Tab The Furniture marketplace will be right there at the top.
You’ll be looking for the sub section named “Materials Market” in the furniture section of the store. The icons look like briefcases filled with location specific things, based on what location you collabed at.