After downloading and signing up to the Merlo Coffee app, you will get 20 points which is used to get the 2 free coffees (10 points each).
Have checked with the folks at Merlo and confirm the app is only available to scan (for the free coffee or purchases) at Merlo Branded stores which are located in QLD.
Locations:
https://www.merlo.com.au/pages/locations
Sweet! Thanks for heads up. Will this be ongoing?