If you do a simple Google search for "what is CDR on Clickbank"....you will see the following:
"CDR means customer distribution requirement, a rule that determines when and why new affiliates should receive their first payment from clickbank. ... That means if you make 10 sales with less than 5 different credit card numbers you will not paid"
Your balance gets forwarded to the next payment period, until you reach the minimum payout threshold ($100) or an amount you've set yourself above that threshold. You could ask to get paid once you reach $200 or $500, mostly to minimize costs involved.
Your payment net balance is now $55.79.