Please check that
- You tap on the "ACTIVATE APP" button after you've cleared Singapore’s immigration, i.e. after your passport is "stamped"/processed at the Singapore checkpoint.
- The details that you entered into the app match the Passport that you used to enter Singapore.
If you continue to face issues activating your App, please email support@tracetogether.gov.sg with your query and details of the issue you are facing, or call us at +65 6973 6511 during operating hours (weekdays 9am - 6pm, excludes Public Holidays).