If you downloaded the latest update for Eletta Explore Coffee Link App (the latest app version is 1.0.3 for iOS and 1.0.4 for Android) then you will receive a pop up prompting you to download Coffee Link from the store.
If you didn't download the latest version then you won't be able to update it as we have removed the Eletta Explore App from the store, and you should instead download the new app which is called Coffee Link app.