Questions Request a new supplier for self-service purchase

Summary: We are having difficulty understanding the system's behavior when a new supplier is requested to register through the self-service procurement.

Content (please ensure you mask any confidential information):

1. When the Buyer receives the registration request and requests more information, the registration status remains Pending Approval. Why isn't the registration status updated for better tracking?
2. When the Buyer receives the registration request and requests more information, the requester doesn't receive any notification to respond. Who should respond to this additional information request? We understand that the requester should be able to complete the information with their username.
3. Where can the requester track their submitted registration requests?