PayPal Standard Pro (foxnetsoft.com)

1Create a REST API app under ‘Apps & Credentials’ in your PayPal Developer account, paste its Client ID and Secret, and press ‘Get webhook ID’ – the plugin registers the webhook in your PayPal app for you. Choose ‘Authorize’ to hold the money or ‘Authorize And Capture’ to take it at once, and keep ‘Use Sandbox’ on while you test. The same page sets multi-currency charging, whether PayPal lists the order’s products or only the total, and the description the customer sees on PayPal.

2‘Create order’ is ‘After Payment’: the nopCommerce order appears only once the customer has paid on PayPal and come back to your store, so you never get unpaid orders. Add a payment fee here if you charge one, as a fixed amount or as a percentage of the order total.

3This is the checkout. PayPal Standard Pro is offered next to the other payment methods as ‘Pay by PayPal, credit or debit card’.

4On the ‘Payment information’ step the customer reads ‘You will be redirected to PayPal site to complete the order.’ and presses ‘Continue’. When reward points or gift cards bring the total to zero, the customer is not sent to PayPal at all.

5On PayPal the customer logs in, or pays by card without a PayPal account, and is returned to your store, where the order is created. ‘Cancel and return’ brings them back to the shopping cart with nothing lost. If the cart total changed while they were on PayPal, no order is created and the customer is told why.

6The paid order in the admin area carries the PayPal transaction ID. ‘Refund’ and ‘Partial refund’ send the money back through PayPal, and in the ‘Authorize’ mode you capture or void the payment from the same page.

7The PayPal transaction ID and the payer ID are also saved in the order notes, so every order can be traced back to its PayPal payment.