Ring Pro installation instructions unclear

Hello,I have bought a Ring Pro but sadly the installation instructions un unclear when it comes to a brand new install with no existing doorbell/wire/chime.I have bought a 16.5AC / 37VA transformer and 18 AWG 2 conductors wire. The issue is that some documents talk about using the Power Pro Kit v2, some talk about using a 50 watt 25 ohm wirewound resistor and some talk about nothing at all but transformer and doorbell.Does the Ring pro need the wirewound resistor? Does the Power Pro Kit v2 replace that?Even the Hardwired Transformer for Video Doorbell Pro sold on ring.com does not talk about the resistor..Last thing I want is to fry my new doobell, thank you!