As the WinScry Client Console MS Windows Service runs it creates daily system logs in the <Data> sub-folder of the installation folder. System log files are kept for five (5) days and then purged automatically.
You can view the system logs by clicking 
System Logs option in the Tools menu of the main window.
The System Logs Window (Click to Zoom)
Simply double-click on a system log file (or select and press the Enter key) to open a log file in your computers' default text editor.