My payment extension callback is failing and orders are stuck Pending, can you fix it?

Yes. Orders stuck in Pending usually mean the gateway’s IPN/callback never reached OpenCart, or it did but the signature check or order-status mapping failed, we see this with PayPal, Stripe, Razorpay, SagePay and Authorize.Net. We verify the callback route resolves (not a 404), confirm SSL and the expected headers, check the IPN/webhook signature, and fix the order-status mapping so paid orders flip to Processing.