Your checkout is broken. Customers can't buy.
A broken WooCommerce checkout is the most expensive problem a store can have. Every hour it's down is direct, measurable revenue loss. We trace the fault and fix it — usually the same day.
- Root cause diagnosis — not just symptoms
- Plugin conflict isolation and resolution
- WooCommerce blocks & classic checkout
- Payment gateway re-validation
- Full end-to-end checkout test
- 30 days follow-up cover
No fix? You pay nothing.
The 6 most common checkout killers
WooCommerce checkout failures almost always come from one of these root causes. Knowing which one matters — the fix is completely different for each.
Plugin conflict after an update
A plugin or theme update introduced a JavaScript conflict that breaks the checkout form. One of the most common causes — and the hardest to trace without a systematic approach.
Most common causeCaching serving stale checkout pages
Your caching plugin is serving an old, broken version of checkout. Certain WooCommerce pages — cart, checkout, account — must be excluded from caching. They often aren't.
Very commonWooCommerce Blocks vs Classic conflict
WooCommerce's newer block-based checkout doesn't always play nicely with older plugins expecting the classic shortcode layout. The result is a checkout that simply refuses to render.
Common since WC 8.xPayment gateway misconfiguration
Stripe, PayPal or another gateway is misconfigured, rejecting connections, or using test-mode credentials on a live site. The checkout loads but hangs or errors at the payment step.
CommonSSL certificate issue
An expired or misconfigured SSL certificate causes browsers to block the checkout page entirely — especially on mobile. Sometimes a hosting migration is the trigger.
Less common but criticalPHP memory limit or fatal error
A resource-heavy plugin pushing the server past its PHP memory limit causes a silent fatal error at checkout. Nothing shows — the page just fails. Logs tell the story.
Often overlooked
How we fix it
We don't guess. We work through the checkout stack methodically until we find the exact fault — then we fix it at the root.
Tell us what's happening
Fill in a short form. Describe what the checkout does — or doesn't do. No technical knowledge needed. Screenshots help but aren't required.
⏱ 5 minutesWe trace the fault
We work through the checkout stack: plugin conflicts, caching, blocks vs classic, gateway config, SSL, PHP errors. We find the root cause — not just the first thing that looks wrong.
⏱ Same dayFixed and tested end-to-end
We fix the root cause and run a complete checkout test — product to payment confirmation. You get a written summary of what was wrong, what we changed, and how to prevent it.
⏱ Confirmed before we closeCheckout down after a routine plugin update
A UK fashion retailer contacted us after their checkout stopped loading completely following a WooCommerce update. The page returned a blank white screen — no error, no message. They'd already tried disabling plugins one by one with no result.
The checkout fields customisation plugin hadn't been updated to support the new WooCommerce blocks checkout. The PHP error was silent on the frontend but fatal — no checkout would render. We replaced the incompatible plugin with a compatible alternative and restored full checkout functionality.
"We'd spent hours trying to find the problem ourselves. Within three hours of contacting StoreFixHQ it was fixed. We didn't even know the checkout fields plugin was the culprit."
— Fashion retailer, UKWhat's covered — and what isn't
We're specialists in WooCommerce checkout failures. Here's exactly what falls within our scope.
We fix these Covered
- ✓ Plugin and theme conflicts causing checkout failure
- ✓ Caching misconfiguration serving broken checkout pages
- ✓ WooCommerce Blocks vs Classic checkout conflicts
- ✓ Payment gateway configuration errors
- ✓ SSL certificate issues blocking checkout
- ✓ PHP memory limit and fatal error resolution
- ✓ JavaScript errors in checkout scripts
- ✓ Cart emptying unexpectedly during checkout
- ✓ Mobile-only checkout failures
Outside our scope Not covered
- ✕ Hacked or malware-infected sites
- ✕ Payment gateway outages on the provider's end (Stripe, PayPal infrastructure)
- ✕ Custom-built checkout flows with no documentation
- ✕ Checkout redesign or new feature development
- ✕ Issues requiring a full site rebuild
Not sure if you're in scope? Send us a note — we'll tell you honestly before you pay anything.
No fix, no fee. Full stop.
If we can't restore your WooCommerce checkout, you pay nothing. We'll tell you exactly what we found and why it's outside our scope — so you know where to turn next.
- No payment taken upfront — invoiced only on successful fix
- Excludes issues outside the covered scope above
- 30 days follow-up cover included with every fix
- Same fault recurs within 30 days — we fix it again, free
Flat rates. No hourly surprises.
You know the cost before we start. All prices exclude VAT.
- Full diagnostic trace
- Root cause fix
- End-to-end checkout test
- Written handover summary
- 14 days follow-up cover
- Everything in Standard
- Same-day diagnosis & fix
- Priority queue — jump the line
- 30 days follow-up cover
- Prevention advice included
- Monthly checkout health check
- Plugin update monitoring
- Pre-update staging tests
- Priority response on any issue
- Unlimited fixes during plan