If you find that your credit card is not being accepted, receiving a message such as "The card you entered cannot be used for this payment. Please enter a different credit or debit card number.", it might be in result of one of the following reasons:
Your card is associated with a specific PayPal account, and you're not logging in with that particular account.
Your card was associated with a PayPal account that has since been closed.
You've linked the card to a PayPal account, but have not yet confirmed it.
You've exceeded your card limit with the PayPal system.
Your email address is raising a red flag in PayPal's system.
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