How to upload hummingbird crowdsourcing without health certificate number?

1. First contact the customer service department of Hummingbird Crowdsourcing to explain the situation.

2. Secondly, consult the local health department or medical institution to find out how to apply for a health certificate and get the number.

3. Finally, get the correct health certificate number and upload the health certificate photos to the hummingbird crowdsourcing platform.