While I did receive my CPs, I also received a message stating that if I'd included my handle directly with the $ donation, I would have received my CPs faster.
The problem is, that by using the 'Paypal' button on the 'Support Us' page of the combine, you have NO WAY to directly associate your user name to the donation! You only have the option of putting your user name in the 'message to seller' field. See this screenprint...
As you can see, the 'Payment For' line of the paypal transaction is hardcoded with "Support for the Combine".
Therefore, I suggest that either that 'Payment For' field is overwritable, so the donator can place their own handle there. ,b>OR scrap that paypal link entirely, and simply have people log into their paypal accounts, and create a payment to email@example.com so that the donator can include their handle in the title of the payment.