@kazunori.sumiya
The error code -4053 is Login Request Rejected.
LoginRequestRejectedEnum = -4053, /*!< Login request rejected from connected peer. */
From the error text "Login Denied:Failed to validate sso token"' , It seems the server is unable to validate the token sent by the application.
You may need to contact the server team in order to verify the problem.
Thank you for your reply.
I will use it as a reference.