Shopify switched off your post-purchase tracking scripts on August 26

A merchant on Shopify’s Basic plan who did nothing has a store that still takes orders, still emails receipts, and stopped reporting them to Google and Meta. August 26 was the deadline for non-Plus stores to move their Thank you and Order status pages onto checkout extensibility, the framework Shopify now uses to customise those two pages. Stores that had not moved were upgraded for them, and Shopify’s guide says an automatic upgrade can’t be reverted even after a paused store is unpaused — the 30-day revert window it offers belongs to merchants who upgraded themselves.

The upgrade takes the Additional Scripts field with it. That box was where a decade of post-purchase code accumulated: the Google Ads conversion tag, the Meta purchase pixel, an affiliate network’s postback, a survey snippet, script tags an app dropped in during install. None of it executes on the new pages. Shopify’s instruction is to rebuild it as web pixels or app pixels, and where an app has not been updated, to ask the developer or find another app.

Nothing about this raises an error. Orders keep landing, so the dashboards a merchant actually watches look normal while the ones pricing ad spend quietly stop agreeing with them. This is platform maintenance rather than an AI story, but the damage lands on AI systems: Performance Max, Advantage+ and every automated bidder learns from returned conversion events, and Shopify’s own data already shows AI-referred orders behaving differently from search traffic. Starve those models of purchase signals and they do not stop. They keep spending, against a picture of demand that stopped updating on August 26.

Ethercycle walks through the checkout extensibility upgrade. It is framed for Shopify Plus and was recorded before the non-Plus deadline, so it shows the editor and the general shape of the migration, not the August 2026 non-Plus flow or the auto-upgrade described here.

Shopify set two August deadlines a year apart, which is how a merchant misfiles this. Additional Scripts became view-only on August 28, 2025, the same day Plus stores hit their own upgrade deadline — merchants could read the code from then on but not change it, and it went on running. August 26, 2026 is the other step, the page upgrade itself, and that is the one that stops the code executing. A merchant who remembers being warned in 2025, checked the box that was already read-only, and heard nothing break has every reason to think this was handled. The freeze and the switch-off are not the same event, and only the second one takes the pixels with it.

Related

• Shopify enables Universal Commerce Protocol by default for 4m merchants
• AI sent Shopify eight times more traffic. It sent thirteen times more orders.
• Only 225 of top 1,000 US retailers are detectably agent-ready