What is the reason for being unable to pay for Subject 3 on 12123?

[LeGage]

12123 Subject 3 payment failure may be due to system malfunction, try logging in again. More information about the 12123 platform is as follows: 1. Introduction: Traffic Management 12123 is the official software of the Internet Traffic Safety Comprehensive Service Management Platform, developed and technically supported by the Traffic Management Research Institute of the Ministry of Public Security. It is an "Internet+" convenience service software that provides traffic participants with services such as handling public security traffic management business, making appointments, publicity, information notification, and inquiries. 2. Usage rules: Users can independently handle single illegal acts of their own and bound non-personal motor vehicles with cumulative demerit points less than 12 points for non-on-site traffic violations; independently pay for traffic violations penalized by police officers on the spot; independently handle traffic violation records of their own motor vehicles and up to 3 bound non-personal motor vehicles; independently handle non-on-site traffic violation records nationwide for their own motor vehicles and bound non-personal motor vehicles.