There are a few reasons why your card payment didn’t go through.
PayPal's process for accepting debit and credit card payments is rigorous. This helps prevent people from paying for things with stolen or unauthorized cards. The screening process is complex and, on rare occasions, it will impact valid cards.
If you know your card is valid but your payment still doesn’t go through, we suggest that you try another card or try your transaction again later.
Advice is voluntary. Kudos / Solution appreciated.