It is very easy to uninstall the screenshot keylogger software from your computer, you can follow steps listed below to uninstall it.
1. Press 'ctrl + alt + shift + s' (this is default shortcut key, you have may changed it) and type the right password in the checking password dialog to show the operation window of Screenshot Keylogger software.
2. Click 'Uninstall' button, and then click 'yes' button in the poped dialog.