I am using the following acmart.cls file downladed here: link
My main latex file's code is as follow:
\documentclass[sigconf]{acmart}
\usepackage[ruled,linesnumbered]{algorithm2e}
\usepackage{optidef}
\usepackage{mathtools,amssymb,amsthm,bm}
\newcommand{\argmax}{\mathop{\hbox{argmax}}}
\newcommand{\bx}{\bm{x}}
% Copyright
\setcopyright{rightsretained}
% DOI
\acmDOI{10.475/123_4}
% ISBN
\acmISBN{123-4567-24-567/08/06}
% SELECT YOUR CONFERENCE/WORKSHOP BELOW...
\acmConference[WOODSTOCK'18]{ACM Woodstock conference}{July 29-August 3, 2018}{City, State, Country}
\acmYear{2018}
\copyrightyear{2018}
\settopmatter{printacmref=false}
\begin{document}
\title[Paper Title Option]{Paper Title}
\author{Author1}\orcid{0000-0000-0000-0000}
\affiliation{
\institution{School of 1\\1 University}
\streetaddress{Address1}
\city{City1}
\country{State, Country}
\postcode{12345}
}
\email{abc@def.ghi}
\author{Author2}\orcid{0000-0000-0000-0000}
\affiliation{
\institution{School of 2\\2 University}
\streetaddress{Address2}
\city{City2}
\country{State, Country}
\postcode{12345}
}
\email{abc@def.ghi}
\begin{abstract}
blah-blah-blah.
\end{abstract}
\keywords{Blah1; Blah2; Blah3; Blah4.}
\maketitle
\section{Introduction}
blah-blah-blah.
\newpage
\section{Related Work}
blah-blah-blah.
\newpage
\section{System Model}
blah-blah-blah.
\newpage
\section{Problem Formulation}
blah-blah-blah.
\newpage
\section{Proposed Algorithm}
blah-blah-blah.
\newpage
\section{Simulation Results}
blah-blah-blah.
\newpage
\section{Conclusion}
blah-blah-blah.
\begin{acks}
This research was supported by blah-blah-blah.
\end{acks}
\bibliographystyle{ACM-Reference-Format}
\bibliography{sample-bibliography}
\end{document}
There is no header in the first page.
The headers in the even pages (i.e., 2, 4, 6, 8, ...) are as follows:
The headers in the odd pages (i.e., 3, 5, 7, 9, ...) are as follows:
I want to make all pages (including the first page) have the same header (left: Paper Title, right: Conference information as in the odd pages).
How can I change the header?
Actually, I want to know not only the way to force it to be solved, but also the way to solve my problem fundamentally by fixing the format file.

