The Order Editing app block is what lets your customers see and use the editing experience after checkout. You install the same block once for the Order Status page, and optionally a second time for the Thank You page. These are two very different surfaces:

The Order Status page is where editing actually happens. Customers can revisit it any time via the link in their order-confirmation email. The block must be installed here for editing to work at all.
The Thank You page is shown only once, immediately after checkout. Adding the block here gives customers a high-traffic "Edit your order" entry point that takes them through to the Order Status page, where the actual editing happens.

Important: If you only install the Thank You placement, customers will see the "Edit your order" CTA but they'll land on a page with no editing options. Always install the Order Status placement first — it's the foundation. The Thank You placement is optional but strongly recommended on top of it.

What each placement does

Order Status page — required

The Order Status page hosts the actual editing experience. With the block placed here, when a customer opens an order during the edit window, the block:

Renders the available editing actions you've enabled (change address, add product, change quantities, etc.)
Shows the countdown until the window closes
Walks the customer through each change inline
Handles payment confirmation when an edit increases the order total
Issues the refund (to the original payment method or store credit) when an edit lowers the total

When an order isn't eligible for editing — window expired, fulfilled, caught by a restriction or rule — the block stays in place but shows a single line: "This order cannot be edited."

Thank You page — optional, recommended

The Thank You page placement is a small "Edit your order" call-to-action that appears immediately after checkout. The block:

Shows the countdown until the edit window closes
Renders an Edit your order button
Sends the customer to the Order Status page when they click

It does not host the editing UI itself. It's a discovery-focused redirect. When an order isn't eligible for editing, the block on the Thank You page hides itself completely so the page looks normal.

Adding the app block

The same steps work for both the Order Status page and the Thank You page — only the page tab you select inside the editor changes. Start with the Order Status page (the required one), then repeat for the Thank You page if you also want the entry point there.

From your Shopify admin, go to Settings → Checkout.
Under Checkout customization, find the published checkout profile and click Customize to open the checkout & accounts editor.
In the editor's top page selector, switch from Checkout to Order status. (You'll see a separate Thank you page tab too — the Order status page is the one a customer returns to from the order-confirmation email.)
In the left sidebar, scroll to the section where you want the app block to appear and click Add app block (or click the + button inside a section).
From the list of installed apps, choose the Order editing app block.
Drag the block to the position you'd like it to render in.
(Optional) Use the right-hand settings panel to adjust any block-level options the app exposes.
Click Save in the top-right.
Repeat steps 3–8 for the Thank you page if you want the block to appear there as well — the two pages are configured independently.

Tip: The Order Status page is the post-purchase page customers can revisit any time via the link in their order-confirmation email. The Thank You page is shown only once, immediately after checkout. They're separate placements in the editor and need to be configured independently.

Note: The block has no settings of its own that affect editing behavior. Everything about what's shown — the countdown, which actions are available, which products are addable, whether the window is open — comes from your Order Editing settings. If you want to change anything, change it in Order Editing Settings, not in the block.

Confirming it works

Place a small test order on your store and walk through it:

Complete a test checkout.
Test the Thank You CTA (if you placed the block there too): confirm the Edit your order button appears on the Thank You page. Click it — you should be taken to the Order Status page.
Test the editing surface: on the Order Status page, confirm the Edit your order section appears with the actions you enabled.
Click through into one action — for example, Change shipping address — and confirm the flow works end-to-end.

If anything is missing, check the troubleshooting list below.

Troubleshooting

"I can't find the Order editing block in the Add app block menu."

Make sure you installed the Triom app in your Shopify store.
The block appears under the Apps section of the Add app block menu, not in the default Shopify block list.
Confirm you've opened the published checkout profile in Settings → Checkout → Checkout customization. Some stores have multiple profiles (draft, archived); the block only appears in the editor for the profile you're editing.

"The customer clicks 'Edit your order' on the Thank You page but the next page has no editing options."

This is the classic sign that the block hasn't been added to the Order Status page. The Thank You CTA only redirects — the actual editing UI lives on the Order Status page. Add the block to the Order status page (steps above) and the redirect destination will start working.

"The block appears, but says 'This order cannot be edited' to customers."

Check that Order Editing Active is turned on at the top of your Order Editing Settings page.
Check that the order isn't caught by a restriction — for example, a restricted sales channel, location, or order tag. See Restricting When Editing Is Available.
Check that the order's edit window hasn't already expired.

"The block on the Order Status page appears but it's empty, or no actions are shown."

Check that at least one action is enabled in Choosing Which Changes Customers Can Make. If all nine actions are off, the block has nothing to offer.
Check whether an Editing Rule is overriding allowed actions for this type of order with an empty set.

"The block on the Thank You page hides itself for some orders."

That's expected behavior. When an order isn't eligible for editing — restriction matched, rule disabled, window expired, etc. — the Thank You placement hides itself completely. The Order Status placement, by contrast, stays in place and shows "This order cannot be edited." Customers don't see why an order isn't eligible; if they ask, your team will need to check the order against your settings.

You're live

Once the block is added to the Order Status page (and ideally the Thank You page too) and confirmed, Order Editing is fully live on your store. Customers will self-serve their own changes during the edit window, and your support team should see the impact in inbox volume within a week or two.

If you later change any setting — extending the window, enabling more actions, adjusting restrictions — the block picks up the change automatically. No reinstall needed.

Getting Started with Order Editing — overview and the master switch
Setting the Edit Window — duration customers have to edit
Choosing Which Changes Customers Can Make — what actions appear in the block on the Order Status page

Adding Order Editing Blocks to Your Thank You and Order Status Pages