Hello, I have a new campaign created under my account called Heroes of the North. When I'm in the game settings, and try to set the default character sheet to NPC, or set the whisper/advantage/damage roll options, I click Save Settings, and I get the message that the settings are saved, but when the page reloads they are back to the defaults they were on before.
My guess is that you are using Firefox as your browser. If so this is a known bug that the devs are aware of. In the mean time you can use Chrome to set the default settings.