Jul 10, 2019 - 5:49 PM
in reply to Removed user
<<"Thank you both for the app info and coins. I'll have paper franks so will look for a change machine. ">>
I think you'll find them near the banks of lockers in Zürich main station.
Or, you can buy something small from a convenience shop -Kiosk, Aperto, Volg and pay with paper money to get some change, as well.
Here are places to change money but I don't think they help with getting coins.