If you have problems ingame which can reproduced in a savegame, please submit it to us.

The savegame is located at different places on different systems:

The full path is: {SystemDrive}:\Users\{Your username}\AppData\Roaming\Serfs\Save

But you have to enable first that hidden files and folders are shown if you want to browse it manually.

Easier is it to copy this into the run window(Windows-Key+R to open) or into the file explorer address bar: