The first step we recommend is to confirm that the financial information saved on PayPal is up to date. Expired credit cards or outdated billing addresses can lead to errors when attempting to complete a purchase on eBay.
Sometimes if you haven’t made a purchase on eBay recently and you’ve saved your PayPal account for streamlined checkout, the authorization may no longer be valid. Try temporarily disabling this feature with the following steps:
It may take a few minutes for your changes to take effect. The next time you go to pay for an item, you can elect to save your information again for future purchases. If you’re still experiencing issues after taking the steps above, you will need to contact PayPal to troubleshoot further. Additionally, be sure to check out our Help Page on paying with PayPal for more details on this payment method.