Why has my order total changed after payment in my new online store?

Topic summary

Order completion fails after payment with the error: “Your payment couldn’t be processed because your order total has changed. Check your order total and try again.” Payment appears to go through, but the checkout does not proceed.

Recent developments:

  • Multiple merchants report the same issue starting a few days ago.
  • One merchant installed the Shopify Bundle app; the problem began afterward. Removing the app did not resolve the issue.

Context and possible causes:

  • Occurs on newly launched stores during test purchases.
  • Suggests a mismatch in order total at checkout, potentially from app-driven price adjustments or bundle logic.

Actions taken/outcomes:

  • App removal did not fix the problem.
  • No confirmed workaround or resolution provided in the thread.

Status:

  • Issue remains open with unanswered questions about root cause and whether Shopify Payments or checkout apps are triggering the total change.

Key terms:

  • Shopify Bundle app: an app that creates product bundles, which can modify pricing and line items at checkout.
  • Shopify Payments: Shopify’s built-in payment processor used during checkout.
Summarized with AI on January 10. AI used: gpt-5.

Hi, I opened a store on shopify a few days ago, then to check if everything was ready, I placed an order for a product in my store, filled in the details and payment details, but after the payment was made, I encountered the problem : “Your payment couldn’t be processed because your order total has changed. Check your order total and try again” . and even though the payment was paid, I was not given the option to continue the order

I am experiencing the same problem. It just started a few days ago. The only thing I did since it was working properly was I added a Shopify Bundle App. Since this app doesn’t work properly, I removed it but it didn’t fix the initial problem.

I have the same issue.