With the portable version of WinFindr, the settings file is stored in %temp%\WinFindr
Moreover, this location cannot be changed.
This is a very bad location, since %temp% is subject to be cleansed at any time.
Moreover, for a "portable" software, the standard policy is to never store anything elsewhere than in executable's folder, or one of its subfolders.
So please modify the soft to have it searching its settings file either in the folder where is stored the portable exe file, or maybe in a "\settings" sub-folder of it
Conversely, it seems (according to the tests I ran on a VM) that the "setup" version stores its settings data in the program foder.... that is also a very bad choice, since it requires to launch the app as admin to be able do modify and save settings.... In this case (setup version), the good choices would have been be either in the registry, or in %appdata%....