Duplicate Killer – Block Duplicate Form Submissions in WordPress. WooCommerce – Prevent Accidental Duplicate Orders Duplicate Killer also protects WooCommerce Classic Checkout from accidental duplicate orders. WooCommerce already disables the “Place order” button, but duplicate orders can still happen when: Checkout is slow Payment gateways lag or retry Customers refresh the page Multiple tabs are used Network requests are retried Duplicate Killer FREE adds lightweight server-side duplicate protection for WooCommerce Classic Checkout. If the same customer attempts to submit an identical order...
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