Doubts for second computer installation

iam going to download in a computer connected to internet in order to be able to pay it, however i will use Scrivener only in my ‘‘writting laptop’’ which is used only for writting . I mean it has not ‘‘internet software’’ etc. in order to avoid distractions.
therefore my doubt is if it is necessary to be connected to internet for register number in the no internet connections writting laptop…

thank you ¡