SMS Authentication Issues Affecting +86 Phone Numbers

A postmortem for the SMS authentication incident affecting +86 phone numbers has been published.

The SMS authentication issue affecting +86 phone numbers has been resolved, caused by external telecom restrictions, not a platform fault.

We have identified that SMS delivery to mainland China is impacted by regulatory restrictions, causing delays or non-delivery of verification codes for +86 numbers.

Monitoring SMS authentication issues for +86 numbers due to regulatory restrictions in China; email MFA recommended.

We are investigating an issue affecting SMS authentication for users with +86 China phone numbers, which may prevent some customers from receiving verification codes and accessing the platform.