@Evans05, Merchants should handle their internal website (built via WordPress Commerce) code and calculate the amount value and pass it in your API calls to PayPal system. We recommend merchants to implement our latest REST API Smart button integration, mentioned in my previous email response. I would suggest to please contact your website developer or the support of the eCommerce to cross check your internal website code and make sure your website is triggering unique Capture Order API calls. Please refer the PayPal Orders API to set up a transaction based on your requirement. https://developer.paypal.com/docs/checkout/standard/integrate/#link-technicalflow https://developer.paypal.com/docs/api/orders/v2/
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