[chochocha]

Hello, I have the installation files for Software ngineering program these program havent license code i believe the program was developed in C++ or C# i need source code source to made some change and easily setup myself anytime cuz the devlopper no give me responce after get paid sorry for my bad english @milanilou

[MavenGradle]

If it's written in C#, have a look at dotPeek (not a paid promotion):
https://www.jetbrains.com/decompiler/