Note: This guide is for PayPal's PayFlow Service, not PayPal Website Payments Pro

1. Access the PayFlow manager: https://manager.paypal.com/loginPage.do

2. Click Service Settings

3. Ensure that either all the IP fields are blank, or you have filled in the IP addresses of your iPhone(s)

4. On your iPhone, open Swipe, and click Config.

5. Click Guided Setup and follow the instructions. Make sure you enter the correct partner ID.