I have a Norton 360 account for 5 devices. 3 of them is a laptop and 1 is going to be a Android. On the 3 laptops I use Norton Family. On the Android I have to use the NF Premier version. If I want to buy this it's only for 1 device (PC?) Now that I have to buy NFP I want to use it on all devices. What do I have to buy (or not)