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Payment API & Webhook Error Fixing

I find out why payments are failing, stuck on pending or duplicated, fix the cause in your code, and add logging so the next problem is easy to see. Who it's for: Businesses whose payment integration is live but unreliable, and developers who need a second pair of eyes on a payment bug. Starting from $30; the final price depends on your scope.

From $30

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What we can help with

  • Failed API requests and rejected transactions
  • Callbacks and webhooks that don't arrive or fail verification
  • Duplicate payments and wrong order statuses
  • Sandbox/production configuration mix-ups
  • Error handling and request/response logging

Questions we are asked

Can you fix it without access to my live account?

Usually yes. Most fixes are in your code and can be tested in sandbox. If the provider dashboard must be checked, you share screenshots or a limited-role login, and you change it after.

A customer paid but the order shows unpaid. Can you mark it paid?

Only after the provider confirms the payment through its API or dashboard. I add a status check so verified payments update orders automatically from now on.

Why do I get duplicate payments?

Usually retries without a unique reference, or a webhook processed twice. I add idempotency, so each transaction reference can complete an order only once.

Can every payment problem be fixed in code?

Most can. I trace the problem and explain what I find. If the fix needs something from the provider (approval, a setting only they control), I'll tell you exactly what to ask them.

Which providers do you work with?

Mobile money APIs (MTN MoMo, Airtel Money), African gateways (Flutterwave, Pesapal, Paystack, DPO Pay) and card gateways with documented APIs.

Start with your requirements

Which payment provider(s) and which API/product (e.g. collections, checkout, webhooks)?

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