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I am running 188.8.131.52 on a few of my sites with payments pro set up through Paypal. Well I have “3D Secure Card Validation” set you yes and “Severe 3D Secure Card Validation” set to yes. Why is it that some cards pass through both validations and other I must run manually? The billing addresses are correct including zip but still occasionally I have some cards that do not pass this validation. Any suggestions?