Authorization trials (such as Hold Trial Charge, Authorize and Void, etc.) are not supported through PayPal Seamless Checkout
“Security error: Security header is not valid” means you are using sandbox credentials against the live PayPal endpoint.
PayPal integration uses Express Checkout.
Step 1: Login and navigate to the funnel on which to add PayPal
Step 2:Click the Settings button on the top left to open the funnel settings
Step 3: Open the Payments section
Step 4: Add a new PayPal gateway or select an existing PayPal gateway
Step 4-1: Adding New PayPal account
Enter a Title and optionally add brandName.
referenceTransactionsEnabled - Required if using PayPal for upsells and/or recurring billings
sendAddressOnUpsell - Checkout Champ will send the address for upsell transactions to PayPal
guestCheckout - Will redirect the customer to PayPal’s guest checkout page instead of the PayPal login page
sendFulfillmentTrackingNumber - Checkout Champ will send the tracking numbers for orders to PayPal (Must add “clientId” and “secret” to PayPal credentials)
Click “Save & Continue” when you are finished with the PayPal configuration.
Step 5: Save and Continue
Step 6: Edit Checkout page and add PayPal button
There are 2 PayPal buttons from which to choose. The difference is style only. You can add multiple PayPal buttons to a page.
Step 6-1: Customize size of button by clicking on the button and dragging the highlighted corners or use Dimensions tab for advanced edits.
Step 7: Save the page and exit the page builder
Step 8: On the arrow leaving the checkout page, choose the PayPal button(s) for navigation.
Step 9: Publish the funnel. You’re done and ready to test!
Recurring Billing without Reference Transactions enabled
Unfortunately, it is not possible to do recurring billings with PayPal if you cannot enable Reference Transactions on your PayPal account. You will need to reach out to PayPal to have Reference Transactions enabled.
Upsells without Reference Transactions enabled
If you cannot enable Reference Transactions on your PayPal account, you can still use PayPal for upsells by redirecting the customer back to PayPal for each upsell.
CheckoutChamp knows if the customer paid with a credit card or PayPal on the initial sale and will process with the same paySource on the upsell pages. This means you don’t need to design your upsell pages any differently than they already are. Using your existing “yes” button on the upsell pages, a PayPal customer will redirect to PayPal if the PayPal gateway added into CheckoutChamp does not have Reference Transactions enabled.