Missing signal
A legacy purchase source stops firing when the old page is replaced.
Shopify post-checkout audit + migration Non-Plus deadline
26 AUG 2026 Official Shopify upgrade date
Legacy post-checkout pages: upgrade by 26 August. £250 net audit. Migration: separate quote.
For one standard-scope non-Plus store. B2B only; not offered to consumers. Audit: map legacy purchase sources and duplicate risks; return a test plan and fixed implementation quote. Implementation: separate; starts only after the written quote and scope are accepted, first payment is received, and Vaeynlab confirms complete access and information in writing.
✓ Audit paid upfront ·
complete audit delivered within 24 elapsed hours after the operator confirms in writing that required audit access and information are complete
✓ Most standard implementation scopes:
£1,250–£2,500 net before audit credit
✓
£250 net audit-fee credit when the written quote is accepted within 7 calendar days after it is sent
Post-change protocol DEMO-VERIFY-001
Synthetic walkthrough · not client dataFour mapped sources ready to check
Two require action; two require review.
Source
Decision
State
01 Google Ads
Replace legacy tag
ACTION
02 GA4
Remove duplicate
ACTION
03 Meta
Retain app pixel
VERIFY
04 Klaviyo
Continuity check
VERIFY
CONTROLLED TEST ORDER
Illustrative protocol
ONE
non-Plus store
ONEpost-checkout setup
ONEdecision map before changes
The deadline
The page can upgrade. Your tracking can still break.
Shopify can automatically upgrade remaining non-Plus stores after 26 August 2026. Legacy code does not automatically become a supported implementation.
Duplicate signal
An app pixel and a replacement tag both record the same order.
Incomplete data
The purchase arrives without reliable value, currency, or transaction ID.
False confidence
The new page looks fine, but the destinations that drive reporting were never checked.
Two separate stages
One decision before anything changes.
The £250 net audit ends with a written plan and fixed quote. Migration, one controlled test order, and the evidence handoff happen only under a separately accepted implementation scope.
AUDIT · £250 net
Current-state inventory
Scripts, pixels, apps, owners, consent dependencies, and destinations mapped before changes.
AUDIT · £250 net
Decision + risk map
Replace, retain, remove, update, or test—one explicit decision and risk rank per source.
AUDIT · £250 net
Test plan + fixed quote
Implementation-access list, test conditions, scope, timing, and fixed price stated in writing.
SEPARATE SCOPE
Supported implementation
Only approved replacements are installed; known legacy duplicates are retired in an agreed order.
SEPARATE SCOPE
One controlled test
One agreed order is checked for observed value, currency, identifier, destination receipt, and duplicates.
SEPARATE SCOPE
Evidence + contingency notes
Pre-change record, final map, observed evidence, and reversal notes only where the platform permits reversal.
Synthetic verification protocol
See what gets checked. Not proof of a client result.
This deterministic walkthrough illustrates the fields recorded after implementation; it does not inspect a live store. It is not a client result and does not prove every future order, consent state, payment method, attribution model, or platform report.
PROTOCOL / 04
Controlled purchase-event test
Synthetic protocol ready
Check
Expected
Illustrative result
Example record
01 Transaction ID
Present where exposed
—
Pending
02 Value + currency
Matched
—
Pending
03 Agreed platforms
Observed where exposed
—
Pending
04 Known duplicates
None observed
—
Pending
TEST CONDITION
One agreed order, consent state, payment path, and test time. Platform delays and diagnostic limits are recorded rather than assumed.
Process
Audit first. Approve changes second.
The first message needs no access. Restricted collaborator permissions are requested only after fit, payment, and scope are confirmed.
Least-privilege access only. Account invitations, never passwords. Temporary access can be removed after handoff.
-
01
Send the basic store details
Share the store URL, Shopify upgrade-report status, and destinations that matter. No access yet.
-
02
Audit and map
After fit and payment, the current setup is inventoried and every source gets a migration decision.
-
03
Approve the fixed scope
The audit returns a risk-ranked plan and fixed implementation quote before any change is made.
-
04
Migrate and record one test
After the written implementation quote and scope are accepted, the required first payment is received, and Vaeynlab confirms in writing that the required implementation access and information are complete, agreed replacements go in, legacy sources come out in sequence, and one controlled order is documented.
Exact boundary
Clear in. Clear out.
The £250 net standard scope means one non-Plus store, legacy Thank you or Order status purchase sources or directly related post-checkout blocks, no server-side or historical-data repair, and the minimum access needed to inspect the mapped setup. The free fit check confirms this before payment. Anything outside that boundary requires a different written scope. Some compatible setups need no paid audit, and the fit check says so when that is clear.
Covered by the service
One standard-scope non-Plus Shopify store
Additional scripts, app/custom pixels, hardcoded Thank you links, and source ownership
App compatibility, customer-account domain alignment, the merchant’s documented consent-gating instructions, and duplicate-source checks
One decision per source, risk rank, test plan, and fixed implementation quote
After the written implementation quote and scope are accepted, the required first payment is received, and required access and information are confirmed complete in writing: approved changes, one controlled order, and an evidence handoff
Outside the standard scope
Identical numbers across advertising platforms
Advertising results, media buying, theme redesign, CRO, or email-flow strategy
Legal consent review or changes to the merchant’s consent policy
Server-side tracking, historical data repair, unrelated development, or ongoing monitoring unless separately scoped
Third-party fees, platform changes, or changes introduced by other parties after handoff
For agencies
Work stays behind your agency.
White-label evidence, client-contact rules, confidentiality, permissions, and portfolio scheduling can be written into an agency scope. No non-solicitation or white-label obligation is created by this website alone. Start with one store.
Start free fit check →Price
Diagnosis first. Fixed scope next.
The audit is the paid diagnosis. If implementation is justified, its full scope and price are fixed before the store changes.
Migration-readiness auditSTART HERE
£250
All displayed prices are net prices and exclude statutory VAT where applicable.
One standard-scope store · 100% upfront after fit · complete audit delivered within 24 elapsed hours after the operator confirms in writing that required audit access and information are complete
✓ Current-state inventory
✓
Access review acknowledged within one business day with either written completeness confirmation or a written missing-items list
✓ Decision map + risk ranking
✓ Test plan + fixed implementation
quote
✓
£250 net audit-fee credit when the written quote is accepted within 7 calendar days after it is sent
✓
Automatic refund of the full audit amount paid, including any VAT charged, within five business days if the complete audit misses that window
Start free fit check →
Migration + verificationFIXED SCOPE
Most standard scopes: £1,250–£2,500 net
Before audit credit · larger scopes quoted separately · 60% of the amount due after any applicable credit before work / 40% at handoff
✓ Agreed supported replacements
✓ Controlled test order
✓ Evidence packet + conditional
reversal notes
✓
Typical standard timeline: 2–4 business days after the written implementation quote and scope are accepted, the required first payment is received, and the operator confirms in writing that all required implementation access and information are complete; the written quote controls
✓ No Vaeynlab subscription;
third-party fees may apply
Check one store →
AUDIT£250 net paid upfront after fit. The complete audit will be delivered within 24 elapsed hours after the operator confirms in writing that all required audit access and information are complete.
IMPLEMENTATION60% of the implementation amount due after any applicable audit credit is payable before work and 40% at handoff.
CREDIT / REFUNDA refunded audit fee cannot also be used as an implementation credit.
CORRECTION PROMISEWithout limiting applicable statutory or written-scope rights, an additional 14-calendar-day promise to correct defects introduced by Vaeynlab’s implementation.
EXCLUSIONSThird-party subscriptions, app fees, test-order cost, and work outside the written scope.
All displayed prices are net prices and exclude statutory VAT where applicable. A business day is Monday through Friday, excluding public holidays at the operator’s service address.
FAQ
Direct answers.
No inflated guarantees. No open-ended hourly work.
What fits the standard £250 net audit?
One non-Plus store with legacy Thank you or Order status purchase sources or directly related post-checkout blocks, no server-side or historical-data repair, and the minimum access needed to inspect the mapped setup. Multi-store, Plus, and excluded work require a different written scope. The free fit check confirms eligibility before payment.
Does every non-Plus store need custom work?
No. Some stores have simple, compatible configurations. The audit determines whether specialist migration is justified and says so plainly when it is not.
What is included in the £250 net audit?
A current-state inventory, one decision and risk rank for every mapped source, a test plan, an implementation-access list, and a fixed implementation quote. Migration and verification are not included. The £250 net audit fee is credited against the implementation price before VAT when the written quote is accepted within seven calendar days after it is sent.
What access is required?
For the audit: minimum read access to the upgrade report and implicated Shopify or source settings, requested only after fit and payment. The audit then lists the separate destination and change permissions needed for implementation; those are not requested unless the implementation scope is accepted.
Can you guarantee GA4, Google Ads, and Meta match?
No. Platforms attribute, deduplicate, and model events differently. The service verifies the agreed configuration and observed test evidence, not report parity or advertising results.
What if an app is already compatible?
It can be retained and verified. Migration does not mean replacing everything; each source is classified as replace, retain, remove, update, or test.
Is a call required?
No. Start with the store URL, upgrade-report status, and destinations that must receive purchase events. A call is only suggested if the scope cannot be settled clearly in writing.
How long does implementation take?
Standard implementations are typically delivered in two to four business days after the written implementation quote and scope are accepted, the required first payment is received, and the operator confirms in writing that all required implementation access and information are complete; the written quote controls.
What does the 14-day correction promise cover?
Written handoff occurs when the evidence packet and final configuration map are delivered after completion. For 14 calendar days from that handoff, Vaeynlab corrects at no additional service charge defects introduced by its implementation. This additional correction promise does not limit any applicable statutory rights or any rights or remedies stated in the accepted written scope. Third-party platform changes, changes made by other parties after handoff, and items expressly documented as excluded, unresolved, or assumed are not covered by the additional promise.
Can everything be rolled back?
No. Reversal depends on Shopify eligibility and timing; some legacy scripts cannot be restored after the platform upgrade or deadline. The implementation records contingencies only for changes the platform actually allows to be reversed.
Free fit check
Check one store. Know the risk before changing it.
Send the basic store details and destinations that matter. This form requests a free fit check—not a paid order. Vaeynlab will confirm whether the setup looks self-serve or whether the £250 net audit is available and justified.
✓ No access required for the first
message
✓ No passwords or customer data
✓ One bounded
£250 net audit