Hi Tony, you don't need to change any parameters, you can search any address in the world tapping the what3words address to open our search bar.
How can I change country to search an address
Where am I?
In w3w.Community you can ask and answer questions and share your experience with others!
All I did as I live in the UK was tap on the three words Search bar and typed Bayonne, new Jersey, USA and it zoomed out to world map then comes in to the location I typed and have me the three words for that location.
Hope that works for you 😊