These steps are too inaccurate imo, better do this:
1 - Download the Wolf RPG Decryptor:
https://f95zone.to/threads/wolf-rpg-decryptor.16162/
2 - Unpack the DXADecode.exe into the games "Data" directory.
3 - Drag'n'Drop Expansion.wolf, Picture.wolf and SystemFile.wolf onto the DXADecode.exe
4 - DELETE Expansion.wolf, Picture.wolf and SystemFile.wolf (or move them somewhere else)
5 - Extract the Expansion.wolf, Picture.wolf and SystemFile.wolf from the Uncensor patch into the "Data" directory
6 - Drag'n'Drop Expansion.wolf, Picture.wolf and SystemFile.wolf onto the DXADecode.exe again
7 - DELETE Expansion.wolf, Picture.wolf and SystemFile.wolf
And then it works.