ebay is making changes to their payments. Paypal will no longer be the primary method of payment on the platform. As of January, 2021 most ebay customers have switched over to ebay's new integrated payments. Eventually, Paypal will be completely removed from ebay and not accepted at all. Customers should change their Spark Shipping settings to reflect when they have switched over to the new payments system in ebay.
WARNING: Not doing this could cause Spark and ebay to quit syncing once ebay removes API support for Paypal.
Once you have switched to integrated payments in ebay do the following:
-To access these settings, navigate to your ebay site settings.
-Click "Default Product Options".
-Click "Payment Method"; change it from paypal to "CreditCard"
Click "Update Default Product Options" to save your selections.
For more information about Spark ebay settings, see this article: