We do not provide support for Chromebooks, it runs a proprietary Chrome OS designed by Google. We do offer support for Windows PCs, MAC computers and Android smartphones and tablets.
See complete system requirements for Total Defense products:
System requirements for Ultimate Internet Security
System requirements for Premium Internet Security
System requirements for Essential Anti-Virus
System requirements for Essential Anti-Virus for Mac
System requirements for Total Defense PC Tune-Up
System requirements for Total Defense Mobile Security