I have the same problem with you. And I found there are many people having this problem. See this post: https://www.paypal-community.com/t5/Selling-on-your-website/Buyer-s-Credit-Card-and-Debit-card-not-going-through/m-p/372558?profile.language=en-gb But no one can resolve it. It seems to be a system error of Paypal.
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