Solved: Debit card keeps declining – PayPal Community

PayPal uses a complex screening process for debit/credit card payments. This helps prevent lost or stolen cards from being used for unauthorized transactions. On rare occasions, the screening process affects valid cards. Link a different card to your PayPal account or pay with your linked bank account if the problem persists.

https://www.paypal-community.com/t5/Payments-Archives/Debit-card-keeps-declining/td-p/1615248