Follow the steps below in order.

1. Update wpDiscuz and Clear Cache

Make sure you are using the latest version of wpDiscuz and all installed wpDiscuz addons.

After updating, clear your website, plugin, server, CDN, and browser caches. Then perform a hard refresh (Ctrl + F5) and test the comment form again.

2. Check for JavaScript Errors

JavaScript errors from your theme, another plugin, or an optimization tool can prevent wpDiscuz from working correctly.

To check:

1. Open the page with the wpDiscuz form.
2. Right-click and select Inspect.
3. Open the Console tab.
4. Reproduce the problem.

If you see errors, take a screenshot or record a short video showing the issue.

3. Check for Plugin Conflicts

Another plugin may interfere with wpDiscuz functionality.

Temporarily deactivate other plugins and test the comment form again.

If the issue disappears, activate the plugins one by one until you identify the plugin causing the conflict.

4. Check for Theme Conflicts

Temporarily switch to a default WordPress theme, such as Twenty Twenty-Six, and test the comment form again.

If the issue disappears, the problem may be related to the theme's JavaScript, CSS, or other custom functionality.

Note: If possible, perform conflict testing on a staging website so that you don't affect your live website.

5. Check Anti-Spam and Security Plugins

If comments are being rejected or cannot be submitted, check your anti-spam and security plugins, such as Akismet.

If the problem affects only certain comments or users, temporarily disable the relevant plugin and test the comment form again.

For more information, please see our guide on wpDiscuz Comment Submission, Rejection, and Moderation.

6. Check Optimization Plugins

If you use a caching or optimization plugin, temporarily disable JavaScript minification, combination, defer, or delay options and test the comment form again.

These settings can sometimes interfere with JavaScript-dependent functionality such as the wpDiscuz comment form.

7. Still Having Problems?

If the issue persists, contact our support team and provide:

• The direct URL where the issue occurs
• Your WordPress and wpDiscuz versions
• Installed wpDiscuz addon versions
• A short screen recording of the issue
• Any JavaScript/Console errors
• Whether the issue affects guests, logged-in users, or both

This information will help us investigate the issue more efficiently.

Why does my comment say "Your comment was not published"?

This message usually means that WordPress or a moderation/anti-spam plugin stored your comment as spam or trash instead of placing it in the pending-approval queue.

If you believe your comment was rejected by mistake, please contact the site owner.

Does "Your comment was not published" mean that my comment is awaiting approval?

No. This message normally means that the comment was stored as spam or trash, not as a comment awaiting approval.

What happens when my comment is awaiting approval?

If your comment is placed in the pending-approval queue, wpDiscuz displays your comment with an "Awaiting for approval" label.

The comment is visible to you, but other visitors cannot see it until it is approved.

Will I lose my comment if it is rejected?

Normally, no. wpDiscuz keeps your comment text and form fields in place so you can review or copy them.

However, we recommend keeping the page open until you have copied your text. Reloading or leaving the page may cause the entered information to be lost.

Why does the same message appear when I submit my comment again?

If WordPress detects that the comment is a duplicate of a comment already stored as spam, wpDiscuz normally displays "Your comment was not published" again without storing another copy.

If a moderation plugin provided a more detailed explanation, that explanation may only be available during the first submission.

Why am I seeing a different error message?

The exact message can depend on WordPress, wpDiscuz, or another moderation/security plugin.

Site owners can also customize wpDiscuz's spam and trash messages.

Does this behavior also apply to replies?

Yes. The same rejection behavior applies to main comments and replies.

If WordPress stores the submission as spam or trash, wpDiscuz displays a rejection response.

Does this apply to inline feedback?

Yes. Inline feedback follows the same rejection behavior when WordPress stores the submission as spam or trash.

When inline feedback is successfully submitted, the wpDiscuz displays the usual "Thank you for your feedback!" message.

What should I check if legitimate comments are being rejected?

If legitimate comments are being rejected, the site owner should check:

1. WordPress > Comments, including the Spam and Trash folders.
2. WordPress Discussion and comment moderation settings.
3. Active anti-spam and moderation plugins.
4. Any caching that may be serving outdated pages or forms.

wpDiscuz 7.6.71 also improved compatibility with anti-spam fields in main, reply, and inline-feedback forms.

Can I change the "Your comment was not published" message?

Yes. The default rejection wording can be changed in the wpDiscuz > Phrases > Errors admin page.

If the site uses PO/MO translation files, these strings should instead be managed through the translation files.

For more information, see the wpDiscuz translation guide.

Where can I learn more about WordPress comment moderation?

You can review the WordPress comment moderation settings in the wpDiscuz comment moderation documentation.

In this case, the best solution is to use the Display comment form for post IDs option.

To configure this option, follow these steps:

1. Navigate to Dashboard > wpDiscuz > Forms.
2. Edit the desired comment form (if you haven't made any changes before, this will be the default form).
3. Enter the IDs of the posts or pages where you want to display the comment form in the Display comment form for post IDs field. Separate multiple IDs with commas.
4. Save the changes and check the comment form on the frontend.

• Display comment form for post IDs
  https://wpdiscuz.com/docs/wpdiscuz-7/getting-started/manage-comment-forms/comment-form-settings/#comment_form_for_post_id
• Manage Comment Forms
  https://wpdiscuz.com/docs/wpdiscuz-7/getting-started/manage-comment-forms/

Important: A verified Facebook Business Account is required to use Facebook Login and Share features. Your Facebook App and Business Account may need to be reviewed and approved by Meta before these features can be used in production.

Getting Facebook App ID and App Secret

3. Enter the App Name and App Contact Email, then click .

4. Select Authenticate and request data from users with Facebook Login, then click .

5. In the Which business portfolio do you want to connect to this app? section, select the appropriate business portfolio and click .

6. Complete the required steps to gain and maintain access to user and business data, then click .

7. Review the provided information and click .

8. Go to My Apps > Dashboard and select the Authenticate and request data from users with Facebook Login use case.

9. In the Permissions and Features section, click the button to add the required permissions.

10. You need to fill the “Valid OAuth Redirect URIs” and click .

To get the Valid OAuth Redirect URIs, go to the Dashboard > wpDiscuz > Settings > Social Login and Share admin page (Facebook section):

11. Open the Quickstart menu and select WWW as the platform.

12. In the next step, enter your website URL.

13. Navigate to the App Review section and ensure that both your Facebook Business Account and Facebook App have been approved by Meta, if required 

14. Go to App Settings > Basic and copy your App ID and App Secret.

16. Finally, copy the Facebook App ID and App Secret and paste them into the corresponding fields in the Facebook section of Dashboard > wpDiscuz > Settings > Social Login and Share.

Important: Make sure your application is switched to Live Mode before attempting to use Facebook Login or Share features on your website.

This action allows you to perform tasks based on comment data. For example, you can use it to prevent guests from using registered users’ email addresses.

To achieve this, use the following hook code:

add_action("wpdiscuz_before_wp_new_comment", function($commentdata){
    if (!empty($commentdata) && empty($commentdata)) {
        $is_user_exist = get_user_by("email", sanitize_text_field($commentdata));

        if ($is_user_exist) {
            wp_die(esc_html__("***A user with this email is already registered! Please log in or use a different one!***", "wpdiscuz"));
        }
    }
});

The red-marked text can be customized as needed.

For a step-by-step guide on adding custom code to WordPress without breaking your site, check out this article: https://www.wpbeginner.com/plugins/how-to-easily-add-custom-code-in-wordpress-without-breaking-your-site/

The code snippet below allows you to create a new folder within the '/uploads' directory, where all wpDiscuz attachments will be stored:

add_filter("wpdiscuz_uploads_folder", function ($dir) {
    $dir  = "wpdiscuz_uploads";
    return $dir;
});

The CSS code below helps you to easily solve the conflict: 

.comment-likes-widget.jetpack-likes-widget.comment-likes iframe {
    height: 18px !important;
}

Put the code in the "Custom CSS code" textarea, located in the Dashboard > wpDiscuz > Settings > Styles & Colors admin page.

Don't forget to delete the caches and press CTRL+F5(twice) on the frontend before checking.

To change the label you should use the hook code below:

add_filter("wpdiscuz_author_title", function ($label, $comment) {
    global $post;
    if ($comment->user_id == $post->post_author) {
        $label = __("***Administrator***", "wpdiscuz");
    }
    return $label;
}, 10, 2);

Put the code in the active theme functions.php file. This article should be helpful for you: https://themaverickspirit.com/add-code-snippets-functions-php-wordpress/

The red-marked phrase can be changed as you like.   

With the hook, you'll be allowed to add the 'notranslate' class for the wpDiscuz comment form, so the GTranslate plugin functions won't work for the wpDiscuz comment form.

 You should use the hook code below: 

add_filter("wpdiscuz_comment_form_args", function($args){
    $args[] = "notranslate";
    return $args;
});

This doc should help you easily add the PHP code in the active theme functions.php file: https://www.wpbeginner.com/plugins/how-to-easily-add-custom-code-in-wordpress-without-breaking-your-site/

wpDiscuz also allows you to customize all three layouts and three styles by customizing comment template files and the main style.css file. Here you can find more info: https://wpdiscuz.com/docs/wpdiscuz-7/customization/custom-template-and-style/

Additionally, you may need to apply small CSS codes and don't want to use the customization method mentioned above. Let's see how you can make small style changes. 

First of all, you should find classes by pressing F12 on the browser and opening Chrome or Firefox Console (it'll help you easily write CSS rules you need to customize).

Then, you'll need to apply the CSS rules. 

Let's discuss an example. If you want to change the color of the thread list title. The right class is: 

#wpdcom .wpd-thread-head .wpd-thread-info

The CSS rule is: 

{color: ***#303066***;} 

The red-marked value is the color you want to use. 

Finally, the code looks:

#wpdcom .wpd-thread-head .wpd-thread-info{
     color: ***#303066***;
}

This is a small video instruction: https://www.screencast.com/t/XPJPyqcqsH6

Put the code in the "Custom CSS code" textarea, located in the Dashboard > wpDiscuz > Settings > Styles & Colors admin page.

Don't forget to delete the caches once you make changes.

This website should help you to write CSS rules: https://www.w3schools.com/cssref/default.asp