Kurt Hansen wrote:
I suspect PayPal is blocking this, not my credit card company. I suspect, too, PayPal is doing this to reduce their own costs rather than protect centos.org or me from a fraudulent transaction. I have a PayPal account that was set up a few years back as a test based on a PayPal offer to me, have never used beyond setting up, but which PayPal has suspended. I'm not interested in using this account nor jumping through the hoops they require. I may have entered this credit card in that account. I suspect PayPal is blocking this credit card number to push me to re-open my PayPal account.
I believe paypal users can choose not to accept money from credit cards due to the fees withheld, although doing this for donations would be kind of silly... paypal's system is somewhat opaque about this sort of thing.