Need help with one click history eraser

[Sliique]

Thanks in advance for any and all help. I use Sprint with a Samsung Epic 4G Touch. I doenloaded One Click History Eraser pro from the Android Market and installed.

I have it configured to delete incoming and outgoing texts, but it doesn't. They still show, if I click the phone Icon, then click "history," on the phone screen. Those in and out texts still show. Any help greatly appreciated. sliique at gmail dot com