There are several reasons your payment won't go through or you're getting declined.
If your credit or debit card was declined:
Your card is expired — make sure your card billing address and expiration is up-to-date. You can update your card’s expiration and/or your billing address quickly and easily in your PayPal account.
You need to confirm your card— in PayPal wallet your card may need to go through a confirmation process. If there’s no “confirm credit card” link on your card details, you don’t need to complete this step.
Contact your financial institution— if the steps about don’t solve the issue, you can call your credit card company to identify the problem.
If your payment won’t process with your bank account or you’re still having problems with your card, try:
- Changing your payment method. If you only have one payment method linked to your PayPal account, add another payment method. You can add a credit or debit card or add your bank account.
If all steps above still don't solve the issue you may call PayPal Customer Support for them to check on your account.