From the menu bar, click Tool, click Re-Login.
Press the Chg. PW button to display the dialog box for changing the password.
Enter three passwords: the current password in the first field and the new one in the other two.
Press the OK button to update the password.
What if you don't remember your password?
You have the option of using [SHIFT] + [↓] to bypass the password screen, then going to tool, and re-log in to change it.
If you want to use a password, you could always uninstall, then reinstall Wincaps.