How to change the headers for ACM paper?

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 11 University}
    streetaddress{Address1}
    city{City1}
    country{State, Country}
    postcode{12345}
}
email{[email protected]}

author{Author2}orcid{0000-0000-0000-0000}
affiliation{
    institution{School of 22 University}
    streetaddress{Address2}
    city{City2}
    country{State, Country}
    postcode{12345}
}
email{[email protected]}

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.