So, to me everything looks fine, but when i open the "startPapi" file, it just opens an error cmd and that's all.

What output is in the console, or can you clarify exactly what error the console gives?

D:\SteamLibrary\steamapps\common\Age of History 3>java -jar PlusicAPIAoh3-1.0-SNAPSHOT-all.jar
Exception in thread "main" java.lang.UnsupportedClassVersionError: ru/artem/alaverdyan/PlusicInjector has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)

D:\SteamLibrary\steamapps\common\Age of History 3>pause

That's all it says.

You need to install Java with version 11
https://stackoverflow.com/questions/9170832/list-of-java-class-file-format-major-version-numbers

Oh okay

Hey, sorry to bother again...
i managed to download the java 11, but the cmd keeps saying:
D:\SteamLibrary\steamapps\common\Age of History 3>java -jar PlusicAPIAoh3-1.0-SNAPSHOT-all.jar
←[41m←[31m←[1m###############################################←[0m
←[31m ▄▄▄·▄▄? ▄? ▄?.▄▄ · ▀ ▄▄· ▄▄▄· ▄▄▄·▀ ←[0m
←[31m?█ ▄███? █?██??█ ▀. ██ ?█ ?? ?█ ▀█ ?█ ▄███ ←[0m
←[31m ██▀·██? █??█?▄▀▀▀█▄?█·██ ▄▄ ▄█▀▀█ ██▀·?█·←[0m
←[31m?█?·??█????█▄█??█▄??█?█??███? ?█ ????█?·??█?←[0m
←[31m.▀ .▀▀▀ ▀▀▀ ▀▀▀▀ ▀▀▀·▀▀▀ ▀ ▀ .▀ ▀▀▀←[0m
←[41m←[31m←[1m###############################################←[0m
←[31mVersion: 1.0.0←[0m
←[31mBy Artem Alaverdyan aka Mega4oSS←[0m

←[47m←[30m[PlusicInjector] Extracting: D:\SteamLibrary\steamapps\common\Age of History 3\aoh3.jar←[0m

and it's just that and nothing else

Do i have to wait longer, or is there something else missing?

Hello, no big deal. You have to wait longer because there is a modification going on. By the way, Lukasz recently released an update in which he changed the package name (what a prankster) because of which PlusicAPI is no longer compatible with the new version. Wait for the new version please.

Hey, Thanks for the reply, atleast it's good to know it wasn't something else missing, but i'll sure be looking if there will be any other errors!