Can't change Bitdefender Total Security 2013 settings?

When I try to change certain settings in this program, like autoscan, it doesn't work, all that happens is that it stays on for a few seconds and then just goes back off. When I try to use autopilot instead of user mode, it doesn't work either, it just selects user mode again. The settings seem to be frozen. Does anyone know why this is happening, and if there is any solution to this. I am running an operating system known as Windows 8 professional. Any help will be appreciated.