\documentclass[aspectratio=169]{beamer}
%\documentclass{beamer}
%%%CHOOSE ASPECT RATIO ABOVE%%%
\usetheme{LU-spfaff}
\usepackage[utf8]{inputenc}
\usepackage[british]{babel}
\title[Short title]{Beamer Example}
\titlecolor{LUGreen} % Choose between LUPink, LULBlue, LUIvory, LUGreen
\titleimage{\includegraphics[scale=.5]{astro.png}}
%\titleimage{\includegraphics[scale=.6]{lumainb.jpg}}
\author{Yzmo}
\subtitle{Subtitles are currently limited to one line}
\date{\today}
\institute{Lund University\\Department of Portals}
\begin{document}
\titleframe
\section{Lorem}
\begin{frame}{Ipsum}
\begin{itemize}
\item This was i triumph
\item I'm making a note here:
\item Huge Success
\item It's hard to overstate this beamer template
\end{itemize}
\end{frame}
\end{document}