Thanks for replying but my questions remain unanswered.
Yer-Man answered it. Don't disable it.
If you want to know why,
You installed some app which runs one of Apple's built-in utilities (kextunload) in the background to perform the functions you installed the app to do. Now, maybe you were tricked into downloading, installing, and entering your admin password to make all of that possible. We don't really have any way to know. Only you would know what you installed (though you could run EtreCheck and post the report which would tell us).
The app would be something that needed to install some sort of deep system modification (a kernel extension--"kext"). Most likely, when it is done using that extension, it unloads it using kextunload. That seems like a nice thing to do as any kernel extension can cause system instability and reduce security.
If you are unaware of installing such an app, then you should definitely investigate further as to what you did install (again, Etrecheck can help you with that).
I'm not sure how you can say that it wasn't answered. It certainly was. Perhaps you have more questions. If so, you should ask them.