Seller Tales

Shopify apps

Why Your Checkout Feels Different After June 30

Published 2026-07-14 · Seller Tales editorial, published by JoyCraft

I need to vent about checkout broke. This has been driving me crazy.

Full disclosure: Seller Tales is published by JoyCraft — when we recommend our own tools below, we say so.

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What Changed

The Deadline

  1. Here is the thing: migration will affect your app subscriptions.
  2. The reality is that most merchants do not know this is happening.
  3. Based on Shopify changelog, many stores are affected.
  4. I switched on a test store and the results were mixed.
  5. From what I am seeing in the developer forums, the migration is not going smoothly.

Cost Breakdown

I tested this on my store and discovered some undocumented behavior. What actually matters: Functions will affect your app subscriptions. I tested this on my store and the results were mixed.

WebAssembly changed quietly. I spent hours testing what was happening. I spent days testing what was happening. I tested this over the weekend and discovered some undocumented behavior.

The problem is that there is no migration path for non-technical store owners. I switched last week and the results were mixed.

  • The issue is that there is no migration path for non-technical store owners.
  • The challenge is that there is no migration path for non-technical store owners.
  • According to Shopify changelog, this is a widespread issue.
  • The reality is that Shopify does not surface this clearly.

Related reading

Seller Tales is a publication by JoyCraft. When we link to our own tools, we say so, and some of those links carry tracking parameters.