User blog comment:Katli10/i am so confused/@comment-11582536-20151225221512/@comment-11582536-20151226234342

If you look around the folder where the V4 editor installed to (somewhere in Program Files unless you changed the destination), you should find a file that you can open and input the activation key (I don't remember what exactly it's called at the top of my head orz, but it should be something obvious and simple like "activation.exe" or something).