Family members are not allowed to be added to the main card of Huaishangtong. What happened?

System failure. System failure caused Huaishangtong master card to be unable to add family members, so it needs to wait for system recovery. Huaishangtong Electronic Pass is a electronic certificate designated by Huai 'an Epidemic Prevention and Control Command to reflect the applicant's health status and identity information, and it is managed dynamically in red, yellow, green and yellow.