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I will fix shopify checkout fix shopify payment gateway shopify bug checkout cart fix
Anthony David
About this gig
Broken checkout mechanics destroy store conversions instantly. A single payment gateway glitch, broken script, or failing button silently kills your daily revenue.
I resolve critical Shopify checkout errors, custom app bugs, and payment processing failures with zero live-store downtime.
What Gets Fixed Fast:
- Checkout button freeze, redirect failures & cart loop errors
- Payment gateway integrations (PayPal, Stripe, Shopify Payments)
- Checkout Extensibility issues, custom app conflicts & script errors
- Shipping rate loading glitches & discount code calculation failures
- Responsive layout breaks on mobile payment screens
Why Store Owners Trust My Fixes:
- Zero Downtime: All patches are built & tested on duplicate draft themes.
- Clean Code: Optimized Shopify Liquid, JS & GraphQL implementation.
- Instant Testing: Complete sandbox test orders completed before handoff.
Stop losing paying customers to checkout errors. Select your package or message me directly for immediate emergency diagnostics!
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 Anthony David
Anthony David
Expert Shopify developer
- FromUnited Kingdom
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, Spanish, French, German
Hi, I'm Anthony David! Stop relying on slow apps that bloat your store and ruin site speed. As an expert Shopify developer, I build clean, high-performance solutions using native Liquid code, custom sections, and advanced Metafields. Whether you need bespoke theme features, AJAX cart upgrades, or urgent bug and checkout fixes, I deliver fast, scalable results. I prioritize clean code to keep your store lightweight and lightning-fast. Message me today to discuss your project!
FAQ
Will my live Shopify store go down while you fix the checkout?
Never. All fixes and custom code are built and tested on an isolated draft theme. Your live customers can continue shopping without interruption.
Can you fix custom Checkout Extensibility and Shopify app conflict errors?
Yes. I specialize in modern Shopify Checkout Extensibility, custom app integrations, and Liquid/GraphQL script conflicts.
What do you need to start the repair process?
I need staff access to your Shopify admin with permissions for Themes, Apps, and Settings (or a collaborator request code).
How do I know the checkout fix actually works before approving delivery?
I run full sandbox/test transactions on your store and provide screen recordings confirming a smooth checkout flow.
What if the checkout breaks again after delivery?
Every package includes post-delivery support to ensure your payment gateway and checkout process remain fully operational.
Can you fix payment gateway declines or merchant approval issues?
I fix code bugs, API setup issues, and checkout integration errors. Gateway account suspensions must be addressed with your payment provider directly.
