I'm having trouble testing credit card payments with PayPal's sandbox. When viewing a buyer's sandbox account's profile from within developer.paypal.com, I can see the following credit card details:
Although, when using these details on the payment screen, I get the message "We're sorry, we can't complete this payment. Please try another card."
I have read in other questions that you should be able to log into a sandbox account, go to add an additional credit card and it should generate some test numbers for you... However, when I do this, all of the fields are blank:
I have also tried using some "valid" numbers (i.e. they pass the Luhn algorithm), but none of those worked for me either.
I've also tried the numbers listed on this page: https://www.paypalobjects.com/en_US/vhelp/paypalmanager_help/credit_card_numbers.htm - They didn't work.
I've tried both US and UK accounts. No luck.
Any ideas?