Shopify Testimonial Widget Not Showing? Fix Blocks & Errors

The steps apply to any testimonial or review widget, whether it comes from a Shopify app or from a script pasted into a Custom Liquid section. Shopify details were checked against the Shopify Help Center and shopify.dev on November 6, 2026. If you're still choosing how to install a widget, start with how a Shopify testimonial widget works.

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Founder and sole developer of ShowTrust.to and Skribra.com

Why is my Shopify testimonial widget not showing?

First question: is the widget’s code on the page at all? If not, the cause is on the Shopify side (theme, template, app embed, block); if it is, the cause is in the widget (errors, content, placement).

Before you change anything

1. In Online Store > Themes, note which theme is live. Edits to any other theme don’t reach shoppers.
2. Open the exact URL where the widget should appear in a private window and note its template (home page, a product, a page).
3. Open the browser’s developer tools (F12, or Cmd+Option+I on a Mac). In Network, reload the page and filter by the widget’s script name. In Console, note the first red error. Screenshot both; an app’s support team will ask for them.

Change one thing at a time and re-test the same URL after each change, so you know which change fixed it.

Match the symptom to the fix

Find where the widget loads from

A widget reaches a Shopify page in one of five ways, each switched off in a different place. Check them in order and stop at the first match.

Script tags have a deadline: since October 1, 2026, apps can’t create or update them, and on March 1, 2027 Shopify stops loading them on storefronts (storefront script tag guide). What that means for your widget is covered in Shopify’s script tag deprecation and testimonial widget limits.

Keep one path per widget. If the app embed is on and you also pasted the same code into theme.liquid or a Custom Liquid section, remove the pasted copy; if you placed an app block, delete any manual copy. Some apps are built to use an app embed and an app block together (the embed loads the script, the block places the widget), as the Judge.me install guide shows. That is one install, not two copies.

Widget missing from the live store

Work through these in order; each is a common reason a widget that was set up isn’t on the page.

You edited a draft theme

Themes named “Copy of …” (a duplicate) or “Updated copy of …” (a theme update) are drafts. A theme update is added as a draft and your live theme stays as it is until you publish it (updating themes). Click Edit theme on the live theme and make the change there, or publish the draft you edited.

The app embed is switched off

1. Go to Online Store > Themes and click Edit theme on your live theme.
2. Click the App embeds icon in the sidebar.
3. Turn on the toggle next to the app’s embed.
4. Click Save, then reload the live URL.

Repeat this after a redesign. When you publish a different theme, apps you activated “won’t be active by default” in it, per the Help Center (apps in themes). App blocks and Custom Liquid sections don’t move across either; add them again on the new theme.

A theme update dropped your code edit

A theme update keeps your theme editor changes, including sections, blocks and app embed settings. Code edits carry over only when they don’t conflict with the new version; if they do, the theme card says “Theme added: code edits could not be included” and you copy them over yourself (updating themes). A widget pasted into theme.liquid is a code edit, so check it after every update.

The section is hidden or on another template

Sections and blocks can be hidden with the Hide button next to their name in the theme editor sidebar (sections and blocks). Check that yours isn’t.

Products and pages can also use alternate templates, such as product.alternate.json (JSON template docs). A widget added to the default product template won’t appear on products assigned to another one. Check the Theme template setting on that product or page, then open that template in the editor.

The page can’t run theme code

Sections can’t be added to gift card and checkout pages (theme structure), and app blocks and app embeds can’t render on checkout pages, including Order status (configuration). Testimonials there need a checkout UI extension, and the information, shipping and payment steps are Shopify Plus only; the plan rules are in the limits guide linked above.

While password protection is on, visitors only see a landing page (password page), and in Shopify’s Dawn theme that page uses its own password layout instead of theme.liquid (Dawn’s password template). A script pasted into theme.liquid doesn’t load there, so test after entering the store password.

The theme editor hasn’t run the script yet

When you add or change a section, the theme editor inserts its HTML without reloading the page, and JavaScript that runs on page load doesn’t run again (theme editor integration). A widget in a new Custom Liquid section can look blank in the editor preview even though it works. Click Save and check the live URL first.

A consent banner blocks the script

Shopify’s Customer Privacy API applies visitors’ consent choices to Shopify-managed surfaces such as pixels, audiences and checkout; scripts you paste into the theme aren’t on that list. Some third-party consent apps hold back scripts they classify as tracking until the visitor consents, for example Pandectes’ auto-blocking. If the widget shows for you but not for new visitors, test with consent accepted and declined, and check the app’s list of blocked scripts.

You’re seeing a cached copy

Hard-refresh (Cmd+Shift+R or Ctrl+Shift+R) or use a private window. Widget vendors may also cache testimonial data for a few minutes, so a newly approved testimonial can lag behind the dashboard.

Shopify “Add block” greyed out or app block missing

These are theme editor placement limits, not widget bugs, per the Help Center’s sections and blocks page and the developer docs on app blocks.

If no section takes the block, the Help Center says to check the theme’s documentation or ask its developer which sections support app blocks (apps in themes).

Testimonials showing twice on Shopify

A widget that renders twice is almost always loaded twice:

• An app embed plus the same code pasted into theme.liquid or a Custom Liquid section.
• The same Custom Liquid section on a template and in the header or footer group, which shows on every page.
• An old script tag and the app’s new app embed running at the same time, which Shopify says loads the script twice and can render the app’s UI twice (storefront script tags).
• Leftover code from a previous testimonial app plus the new app’s widget.

In Network, filter by the script’s file name: two requests means two loads. Search all theme files in the code editor for that file name, remove one copy, and confirm one request and one widget on the same URL.

Fix theme errors after adding widget code

These errors break the page or the theme editor rather than just hiding the widget.

Why these errors happen

• JSON templates are data files: a list of sections and their settings in a fixed schema (JSON templates). HTML or a <script> tag makes the file invalid.
• Custom Liquid content can’t exceed 50 KB, invalid Liquid causes an error on save, and non-existent Liquid tags render as empty strings (input settings). A snippet that uses {{ name }}-style placeholders for its own templating loses them.
• jQuery: the layout files of Shopify’s Dawn and Horizon themes don’t load it (checked November 2026), so snippets that assume $ exists fail there.
• Leftover snippet calls remain when an app deletes its snippet file but not the line that renders it.

More on style isolation and layout shift: embedding testimonials on your website.

Undo a bad edit

Before you edit theme.liquid, config/settings_data.json or any template by hand, duplicate the live theme and work on the copy. For Liquid files, the code editor keeps earlier versions: pick one in the Timeline panel at the bottom right, review the differences and click Revert contents (code editor).

Remove leftover code after uninstalling a testimonial app

Shopify removes an app’s blocks from your themes automatically when you uninstall it (theme app extension UX). Code written into theme files is different: “Some apps add code to your online store theme that isn’t automatically removed,” says the Help Center (uninstalling apps). Before uninstalling, check the app’s App Store listing for extra steps, or contact the developer through Settings > Apps > Get support.

To clean up by hand:

1. Duplicate the live theme and work on the copy.
2. While the app is still installed, switch off its app embed and delete its blocks and sections.
3. In the code editor, search all files for the app’s name, script domain and snippet names. Shopify’s third-party script audit guide points to layout/theme.liquid and the snippets/ folder first.
4. Delete leftover <script> and <link> tags and the {% render %} or {% include %} lines that call the app’s snippets, then the snippets.
5. Preview the copy, check the Console on the pages that showed the widget, then publish.

Checks for a ShowTrust wall on Shopify

ShowTrust has no Shopify app, app block or app embed. On Shopify its embed code, a script plus a <div id="showtrustto-widget"> container from the wall settings docs, goes into a Custom Liquid section. The app embed and app block checks don’t apply, but the theme-switch rule does: add the section again on a new theme, and delete it yourself when you stop using it. The snippet has no {{ }}, so Custom Liquid saves it as is. Then check:

• Sample testimonials you didn’t write. Your first project starts with six demo testimonials that show on the wall until you click Clear demo data (managing testimonials); clear them before launch.
• An approved testimonial isn’t showing. Only Approved testimonials appear, not Pending ones, and the widget is cached, so a new approval can take up to about five minutes to reach the page.
• The wall appears at the bottom of the page. The script didn’t find its container: the id must be showtrustto-widget or match the containerId in the config. Without one, the wall is added at the end of the page, on every page if the script sits in theme.liquid. Keep script and container together in one Custom Liquid section.
• Two walls, one at the bottom. The script is on the page twice; with default settings the second copy can’t reuse the first container and adds another wall at the end. Search the theme for showtrustto-widget.js and keep one.
• Console: ShowTrustTo: projectId is required in SHOWTRUSTTO_WIDGET_CONFIG. Paste the snippet again from the dashboard.
• Console: ShowTrustTo: Failed to load widget. Check Network for a blocked request (an ad blocker or consent app) and that the project ID is right.
• Theme fonts and colors don’t apply. By design, the wall renders inside a shadow root so theme CSS and its styles stay apart. Set allowCssOverride: true in the config to let your theme’s CSS style it (theming).

For a clean reinstall, follow the Custom Liquid steps in how to add testimonials to Shopify.

Know where your widget comes from

Most Shopify widget problems stop being mysterious once you can say in one sentence where the widget loads from: “an app embed on the live theme” or “one Custom Liquid section on the home page”. If you can’t, start there, remove every second copy, and test one URL at a time.

If you still need the app’s support team, send the live URL and its template, the theme name and any recent update or switch, a screenshot of App embeds, and the first Console error.