Question: I'm testing my funnel with the Paypal sandbox environment, the 1 click upsell is not working as expected. When I select to add the product it asks for credit card info again. Why does the one-click Upsell with Paypal ask for customers to reenter their credit card information?
Answer: This is expected behavior when you are using PayPal. PayPal requires their users to log in again to confirm their identity and ownership of the account before the purchase is allowed to happen. That is part of PayPal's security protocol.
If you have any questions about this, please contact our support team by clicking the support icon in the bottom right-hand corner of this page.