Web Launch Recorder has been changed, and it's now called Screencast-O-Matic. Based on the way the software works, your recordings were probably uploaded to the company's servers or your local hard drive. Start the software, then access its built-in Settings menu to select the output path. If you didn't upload anything, the videos should be there.
Additionally, upload to the Screencast-O-Matic because it has better integration with online services, Windows 10 support, and much more.