Lite tweaks - Can't hide hibernate/suspend buttons

[Crimson_Raven]

Hey guys!
Basically, as the title says, I don't seem to be able to hide the hibernate and suspend buttons from Lite tweaks tool. It launches, suspiciously enough, doesn't ask for admin password, and says it needs to reboot to apply changes. Denying just sends me back to its menu, letting it restart doesn't seem to do anything, the buttons are still there.
I'm using Linux Lite 4.8 x64, booting from my USB drive. It's not the default boot option, if it matters at all.
Any ideas are welcome! Perhaps there is another way to do this, perhaps via terminal or editing a config file?

[Valtam]

That setting will not work unless Linux Lite is installed to hardware. Install to your computer, then the settings will work.

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