Why can't I find the option to modify the SMS signature?
Currently, the Cloud Development Console uses V2 version login authentication and does not support custom signatures.
Users using the legacy V1 version login authentication can configure it in the legacy Cloud Development Console. However, the V1 login authentication will be gradually phased out. Please migrate to the V2 version as soon as possible. How to migrate
Reasons for custom SMS signature send failure
Due to carrier policy changes, SMS messages with custom signatures using V1 version login authentication may be intercepted. Please switch to the Cloud Development unified signature SMS.
For Enterprise Edition and above users who have configured custom signatures and are unwilling to switch to the V2 version of login authentication, please contact customer service.