Paypal Check Your Account At Your Card Issuer Before Retrying This Card Better Patched Site
Issue Report: PayPal Payment Error - Card Issuer Verification Required
Here is a breakdown of why this happens and how to fix it quickly. Why Your Card Was Declined
When PayPal Is Actually Lying (And It Is Their Fault)
If using a prepaid card (like Vanilla Visa), it may not support international transactions or may still be in an "initial" activation phase (up to 48 hours after purchase). Security Blocks: Issue Report: PayPal Payment Error - Card Issuer