A. B would still receive the passup from C as long as his account hasn't been suspended, even though he has not yet given his 2nd passup to fully complete his 2-UP qualification. The next person that B personally refers would be passed up to A.
A.Reverse 2-UP - Every Members must pass up the second and fourth person they refer to their sponsor. Example: Member A refers Members B, C, D, E and F in that order. B is kept by A. C is passed up to A's sponsor. D is kept by A. E is passed up to A's sponsor. F is kept by A and anyone that signs up after F is also kept by A.
PayPal Payment Data Transfer (PDT) allows you to retrieve information about the payment made to PayPal on the signup page. What this does when turned on is it prefills the form on the signup page with information from the person's account in PayPal. This helps prevent the confusion where a member tries to signup using the wrong PayPal email.
Login to your Paypal account and go to Profile -> My Selling Tools
Click the Update link next to Website preferences
Turn on Payment Data Transfer PDT and copy the identity token
Paste the Identity Token value in Advanced Features in the PayPal Auth Key section under the Billing section.