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I will shopify checkout fix payment gateway fix shopify plus shopify functions checkout
Samuel L.
About this gig
Hi, I'm Samuel, a Shopify developer specializing in checkout customization and Shopify Plus checkout extensibility. Checkout broken? Payment gateway failing? Still stuck on deprecated checkout.liquid or Shopify Scripts? I can fix it.
I handle Shopify checkout fixes, cart page customization, checkout.liquid edits, Shopify Plus checkout scripts, and full checkout extensibility builds migrating legacy Scripts to Shopify Functions with custom Checkout UI Extensions so your store stays compliant and keeps converting.
Also included: custom cart pages, checkout and post-purchase upsell setup, payment gateway fixes, and general Shopify bug fixing clean, tested code, clear communication, fast delivery.
Need it fixed before a big sales push, or a full Plus checkout rebuild? Message me your store URL and the issue let's get your checkout converting today.
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Get to know Samuel L.
Samuel L.
Everything Shopify
- FromUnited States
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, German, Spanish, French, Italian
Welcome to my space
I'm Samuel a Shopify Specialist helping businesses build, redesign, and optimize professional, high-converting eCommerce stores.
I specialize in
Shopify store setup
Custom theme design
Liquid customization
Product setup, app integrations
API connections
Migrations
Troubleshooting
Performance optimization.
My goal is to create fast, user-friendly, scalable Shopify stores that not only look great but are built to support real business growth.
let's bring your vision to realization through my expertise
My Portfolio
Other Website Maintenance Services I Offer
FAQ
Do you work with Shopify Plus stores specifically?
es — I handle both standard Shopify checkout work and Shopify Plus checkout extensibility/Functions development.
What's the difference between checkout.liquid and Checkout Extensibility?
checkout.liquid and the old Shopify Scripts editor are deprecated; Shopify Plus now requires Checkout Extensibility (UI Extensions + Shopify Functions) — I handle the migration.
Can you migrate my Shopify Scripts to Shopify Functions?
Yes, this is one of my core services — I rebuild your existing script logic using Shopify Functions.
Do I need Shopify Plus for checkout customization?
Deep checkout.liquid/UI Extension work requires Plus. Non-Plus stores can still get cart-page, Thank You/Order Status page customization, and bug fixes.
How fast can you fix a broken checkout?
Most checkout/payment gateway bug fixes are delivered within 24–48 hours
Will you need access to my Shopify admin?
Yes, collaborator access is required to edit theme code, checkout settings, or Functions/Scripts.
Can you set up checkout or post-purchase upsells?
Yes, included in the Standard and Premium packages.
Do you fix payment gateway errors?
Yes — this is covered
Will this break my live store?
No — all changes are tested in a duplicate/development theme before publishing live.
