Last verified 2026-07-14
shopify checkout missing discount code box
Hiding the discount field doesn’t stop stackers — it just frustrates legit buyers. Surface the field cleanly and kill combine-able legacy codes.
The actual problem
Checkout Extensibility or apps hide the discount field, so promised codes fail and support spikes.
Do this
- Open checkout as a customer; confirm discount entry is visible.
- Checkout editor: re-enable discount field / remove blocking apps.
- Test the top campaign codes end-to-end on mobile.
- Update ads only after codes apply at checkout.
Tools for this job
- Tillkiln
Discount stacking + checkout path audit
Scan the live storefront for stacking, OOS-buyable, and dead links before you blame ads → tillkiln.com.
- Shopify Discount Docs
Checkout discount UX rules
Related intents
Scan the store before more ad spend
Tillkiln finds checkout and storefront leaks — stacking discounts, OOS still buyable, dead collection links — with a rough $ leak estimate.
Also from Cashkiln
- Tillkiln — scan checkout leaks before you buy more ads
- Netkiln sample — client-ready revenue-health page from a payouts CSV ($19 clean unlock)
- Free leak checklist — six operator checks
Deep-dive report — $29
Self-serve checklist expansion for this query family. PayPal Checkout. No call.