I have set up my ring doorbell pro, followed all the steps as directed. There is power to the doorbell as when you press the button it flashes blue and chimes.
I cannot for the life of me get it to flash white to set it up. 
Hi @Aljaking. To accomplish this, you’ll need to press the Setup Button. You’ll have to remove the faceplate to uncover this. Just press the Setup Button on the side of your Ring Pro and it will enter Setup Mode. I hope this helps.