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Fiverr Pro
English
$
USD
I will fix payment gateway errors, stripe checkout issues and failed transactions, wix
Christopher
About this gig
Is your payment gateway broken? Are customers seeing errors at checkout and leaving without paying? That's lost revenue every hour let me fix it.
I specialize in diagnosing and fixing payment gateway errors across Stripe, PayPal, Square, Flutterwave, Paystack, and more on websites built with Wix, WordPress, Shopify, Webflow, or custom code.
COMMON ISSUES I FIX:
Stripe not processing payments / card declined errors
PayPal checkout not completing
Webhook not firing or receiving
Subscription payments failing or not renewing
Checkout page errors and crashes
Country or currency not supported errors
International cards being declined
Payment gateway showing but not processing
Sandbox working but live mode failing
API keys and credentials misconfigured
SSL / security errors blocking checkout
WooCommerce, Wix, or Shopify payment plugin conflicts
MY PROCESS:
1. I diagnose the exact issue
2. I fix and test the complete payment flow
WHY CHOOSE ME:
Fast diagnosis
Fixed before delivery you test and confirm
Works on any platform or gateway
No fix, no charge policy on diagnosed issues
Message me with a description of your error I'll tell you exactly what the problem is before you order.
Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Christopher
Christopher
Expert Solutions Architect, Payment Gateway, API Specialist
- FromUnited Kingdom
- Member sinceApr 2026
- Avg. response time1 hour
Languages
English
Stop losing sales to checkout errors! I am a Solutions Architect specializing in seamless payment gateway integrations and technical fixes for Wix, Shopify, WordPress, and Custom Apps.
From Stripe and PayPal to SCA/3D Secure compliance and Wix Velo custom coding, I bridge the gap between your store and your revenue. Whether you need a fresh integration or a complex bug fix, I ensure your checkout is secure and optimized.
✓ 24H Delivery
✓ Full Sandbox/Live Testing
✓ No Fix, No Charge
✓ All Gateways (Square, Klarna, etc.)
Let's secure your revenue today!
FAQ
What information do you need to get started?
I’ll need a brief description of the error (or a screenshot), the platform you are using (e.g., Wix, WordPress), and the gateway (Stripe, PayPal, etc.). To perform the fix, I will typically need temporary collaborator or admin access to your website backend and the payment provider dashboard.
Can you fix "SCA" or "3D Secure" authentication errors?
Yes. If your customers are seeing errors related to Strong Customer Authentication (SCA) or 3D Secure 2, it usually means your integration is outdated. I can update your API calls or plugin settings to ensure compliant, secure authentication that works with modern banking standards.
My checkout works in Sandbox/Test mode but fails in Live. Can you fix this?
Absolutely. This is a common issue often caused by misconfigured API keys, restricted account permissions, or webhook URL mismatches. I will audit your live credentials and environment settings to ensure your "real" transactions process as smoothly as your tests.
Do you work with custom-coded websites or just CMS platforms?
Both. Whether you are using a builder like Shopify, Wix, or WordPress, or a custom-coded site using PHP, Node.js, or Python, I can dive into the code to debug API responses and fix the logic errors preventing successful checkouts.
Will my customer data remain secure while you work?
Security is my top priority. I never need your customers' full credit card details. I only require technical access to the integration settings and logs. I recommend changing your passwords or removing my access once the fix is verified and the order is complete.
What happens if the issue is with the bank and not the website?
During my diagnosis, I will determine if the error is "On-Site" (code/settings) or "Off-Site" (bank/processor restrictions). If it is a processor issue, I will provide a detailed report you can send to their support team to get it resolved quickly.
Can you fix issues where a customer is charged but the order isn't created?
Yes, this is usually a Webhook synchronization issue. I will ensure your website and payment gateway are communicating correctly so that orders are automatically marked as "Paid" and confirmation emails are triggered the moment a transaction succeeds.
Do you handle recurring billing and subscription failures?
Yes. I can troubleshoot issues where subscriptions aren't renewing, trial periods aren't transitioning correctly, or the "Update Card" functionality is broken. I work with Stripe Billing, WooCommerce Subscriptions, and native Wix/Shopify recurring payment tools.
How long does a typical fix take?
Most payment gateway errors can be diagnosed and resolved within 12 to 24 hours. If the issue is a simple credential or plugin conflict, it can often be fixed even faster. High-urgency "site-down" situations are my priority.
Can you help me switch from one payment gateway to another?
Definitely. If you’ve decided to move from PayPal to Stripe (or vice versa), or need to add a local provider like Paystack or Flutterwave alongside your current options, I can handle the full integration and testing process for you.
