\documentclass{scrartcl}

\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[T1]{fontenc}
\usepackage[a4paper,top=3cm,left=3cm,right=3cm,bottom=3cm]{geometry}
\usepackage{eurosym}
\usepackage{graphicx}
\usepackage{xifthen}
\usepackage{titlesec}
\usepackage{expl3}
\usepackage{xparse}
\usepackage{tabularx}
\usepackage[hidelinks]{hyperref}
\usepackage[autostyle=true,german=quotes]{csquotes}
\usepackage[table]{xcolor}

\parindent 0pt
\parskip 1ex

\newcommand{\leadingzero}[1]{\ifnum #1<10 0\the#1\else\the#1\fi}

\makeatletter
\newcommand*{\insertheaderrule}{\rlap{\rule[-.5\normalbaselineskip]{\textwidth}{.4pt}}}
\def\ps@fsrProtokoll{%
    \def\@oddhead{\insertheaderrule%
      Fehlende Unterschriften in Protokollen \leadingzero{\day}.\leadingzero{\month}.\the\year \hfill Fachschaftsrat Informatik%
    }
}
\def\ps@fsrProtokollTitlePage{%
    \def\@oddhead{\insertheaderrule%
      \includegraphics[height=4em]{assets/fsrlogo}\hfill%
      \includegraphics[height=4em]{assets/tudlogo}%
    }
}
\makeatother
\pagestyle{fsrProtokoll}

% titlepage
\renewcommand*{\maketitle}{%
  \begin{titlepage}%
    \thispagestyle{fsrProtokollTitlePage}
    \begin{center}%
		\vspace*{.5cm}%
		{
	    	\textbf{
				\Large Fehlende Unterschriften in Protokollen bis zum
				\leadingzero{\day}.\leadingzero{\month}.\the\year
			}
		}
    \end{center}%
  \end{titlepage}%
  \hypersetup{%
    pdfauthor=Fachschaftsrat Informatik,
    pdftitle=Fehlende Unterschriften in Protokollen bis zum \leadingzero{\day}.\leadingzero{\month}.\the\year
  }
}
\let\endtitlepage\relax


\begin{document}

\pagenumbering{gobble}

\maketitle

\renewcommand{\arraystretch}{1.19}

\rowcolors{2}{gray!25}{white}
\begin{tabularx}{\linewidth}{|X|X|X|}
\hline
\rowcolor{gray!50}
\textbf{Kürzel, Person}
\\ \hline

AO Anton Obersteiner \\ \hline
FN Fabian Naumann\\ \hline
HS Hamdaan Shaikh\\ \hline
HeH Helene Hausmann\\ \hline
HK Himanshu Kaloni\\ \hline
JaS Jakob Steinberg\\ \hline
JoS Joachim Stramke\\ \hline
JB Johanna Berger\\ \hline
JF Jonas Frei\\ \hline
JG Jonas Gaffke\\ \hline
LF Lyn Fugmann\\ \hline
LW Lydia Will\\ \hline
MS Macy Schreiber\\ \hline
ML Marco Lehner\\ \hline
RS Rajasekar Sankar\\ \hline
RS Reiner Stolle\\ \hline
RS Rouven Seifert\\ \hline
TF Tom Fiedler\\ \hline
VK Vincent Kruse\\ \hline
WW Wolfgang Walter\\ \hline
\\ \hline
\\ \hline
\\ \hline
\\ \hline
\\ \hline
\\ \hline
\end{tabularx}

\end{document}