I have read all the posts in the last 10 pages, followed the mod download guide that was on steam and have succesfully run the mod manager and checked all the files are properly installed in the folder. I have also installed the mods that was uploaded to the german site as well as some other mods from another post here and i have tried both manually and automatically installing them with the UMM or dragging them into the mod folder. However, the mod manager icon still doesnt appear on the main menu when i launch the game.That installer only works with the game installed from Steam.
You need to unpack "files/0.24.0.0" and run UnityModManager.exe from "files/0.24.0.0/UMM".
Cheat Engine is pointless for most Unity Games, where most of the game's code is stored in IL (intermediate language).
IL instructions get JIT (just-in-time) compiled at runtime to machine code, which is what Cheat Engine works with and which is a lot harder to reverse engineer than IL, more so when it comes to optimized machine code.
For Unity, it only makes sense to reverse engineer and modify machine code if you are modifying Unity's C++ engine code or the IL code is encrypted and decrypted during JIT compiling.
NOTE: You may also need to edit doorstop_config.ini to point targetAssembly to the real location, in case UnityModManager.exe didn't do so.
Any suggestions as to what might be the problem?