acronym package automatic sorting and AC's option

Question

Update:

What I wan't to achieve is:

1. have my acronym short and post it with an 's in the text. So f.e. my \acp{gdr} gets GDRs but I want GDR's as result;

(Full: 'As a result of the GDR's political control over the influx of migrants.' )

2. have my table of acronyms autmatically sorted by the alphabet

I am also using the package but I can't find how to achieve AC's (f.e. I have the acro GDR = German Democratic Republic and want to write "The GDR's xyz is very ...") plus I haven't found an option about automatically sorting the list of acronmys. Anybody with solutions? I also looked at the acro package they would have the option to declare my plural. But I am familiar with the other package so I'd like to move on with it.

(Here some example code)

\documentclass[12pt, oneside]{article}
\input{VorlageE.tex}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  Bibtex File einbinden %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\addbibresource{literatur.bib} 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  Beginn des Dokuments  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\section*{List of acronyms}
\addcontentsline{toc}{section}{List of acronyms}%
\markboth{List of acronyms}{List of acronyms}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%  Abkürzungen %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{acronym}[ECU]
\acro{afd}[AfD]{Alternative für Deutschland (political party in the German ``Bundestag'')}
%....
\end{acronym}
\end{document}

Input file:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%   Zusaetzliche Pakete  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage[gen]{eurosym}
\usepackage{delarray}
\usepackage{mathtools}
\usepackage{amssymb}
\usepackage[overload]{empheq}
\usepackage{acronym}
\usepackage{enumerate}  
\usepackage{a4wide}
\usepackage{fancyhdr}
\usepackage{graphicx}
\usepackage{palatino}
\usepackage{float}
\usepackage{cite}
\usepackage[autocite, maxlevel=3]{csquotes}
\usepackage[bookmarks]{hyperref}
\usepackage[edges]{forest}
\usepackage{siunitx}
\newcolumntype{d}{S[input-symbols = ()]}
\RequirePackage[english=english-x-latest]{hyphsubst}
\usepackage[a4paper, margin=0cm, left=3cm, top=3cm, right=2cm, bottom=2cm]{geometry}
%%%Footnotes with author (year)
\usepackage[backend=biber,sorting=nyt,style=ext-authoryear-icomp,innamebeforetitle=true,autocite=footnote,dashed=false,natbib=true,maxnames=3 ]{biblatex}

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