By checking the current configuration ,we can see the telnet users are with level 15 privilege :
user-interface con 0
user-interface vty 0
authentication-mode password cipher %@%@Ljz*V`O25/tjO)
user privilege level 15
user-interface vty 1
authentication-mode password cipher %@%@*@'3L~ggP
so the configuration shouldn't have any problem ,also the telnet user information shown with command is with level 15 Privilege.
After by adding the command :non-system-admin save enable ,and the issue was resolved, because with and after V100R001C30 version ,for cyber security consideration ,by default ,non-system administrator don’t have the rights to save the configuration ,However the rights can be enabled with above command, for the former version ,there is no such limitations.