You can open your FairPrice Group app to check if it is the latest version (Android: ver 6.74.0 or later / iOS ver 6.69.0 or later). To check, tap “Account” icon and scroll all the way down and look for ‘Version’.
If it is not the latest version, you can go to App Store (iOS) or Play Store (Android), search FairPrice, click on the FairPrice Group app and check if there’s an update available.