Hi St-Kietvo,
Just to confirm - when you go to checkout by using an Amazon accelerated checkout button on the product page, the checkout is not showing the extension you added? Is this the flow you are currently testing?
Topic summary
Issue: Checkout UI Extensions (App Blocks for points/UX) disappear when buyers use accelerated checkout methods. After selecting Amazon Pay and logging in, the checkout switches from the merchant’s one-page flow to Amazon’s three-page flow and all extension blocks vanish.
Scope/affected methods:
- Confirmed by Shopify staff: Checkout UI Extensions are not currently supported on accelerated checkouts (e.g., Amazon Pay, Google Pay). A developer also reports the same with Shop Pay.
Status from Shopify:
- Known limitation; the product team is working toward support but no timeline or details are available.
- For updates, developers are directed to the Shopify developer changelog (shopify.dev/changelog).
Related questions:
- Inquiry about Shopify Functions compatibility with accelerated checkouts; no information was provided at this time.
Outcome:
- No fix or workaround provided. The limitation remains, and the discussion stays open pending future product updates.
Notes:
- Screenshots were shared to illustrate the disappearance of App Blocks under Amazon Pay, but no additional technical artifacts were provided.