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.

Great question—this is definitely something worth paying attention to. The good news is that heavily commented threads don't inherently harm your site's crawl efficiency or authority, but there are some practical steps you can take to optimize. The main concern you're touching on is page weight and resource management, which can affect crawl budget and user experience (both ranking factors).

Here's what I'd recommend: Start by implementing comment pagination to reduce the initial page load. Navigate to Dashboard > Settings > Discussion and adjust the number of comments displayed on initial page load. This keeps your pages lean while still making all comments accessible to search engines. Regarding user-submitted links within threads—this is worth monitoring. Make sure you're using the rel="nofollow" attribute on user-generated links to prevent passing authority to potentially low-quality external sites, which could indirectly impact your site's trustworthiness. You can typically configure this in wpDiscuz settings or through your theme's comment filtering.

The comments themselves are generally crawlable by search engines, so they can actually add topical depth to your posts. However, if you're seeing performance issues, consider enabling lazy loading for comments or using a CDN to speed up delivery. Have you checked your Core Web Vitals and page speed metrics specifically for posts with heavy comment threads? That might give you clearer insight into whether the comments are actually the bottleneck.

It appears that the wpdiscuz-ajax.php file is being blocked on your website. This may be caused by another plugin, your theme, or a server-side security configuration.

Please try deactivating the plugins and theme one by one, checking the issue after each deactivation. If the issue persists with all plugins and the theme disabled, please contact your hosting provider and ask them to check whether the wpdiscuz-ajax.php file is being blocked on the server side.

As an alternative solution, please go to Dashboard > wpDiscuz > Settings > General Settings and enable the Use WordPress native AJAX functions option.

After enabling the option, please clear all types of caches (CDN, website, wpDiscuz, and browser) and check the issue again.

2nd comment keeps on loading, first is correctly showing on the screen

Console error

While auditing our site performance and checking our dapascoreover the past couple of weeks, I noticed an unexpected drop right around the time several comment-heavy posts started ranking for secondary keywords. This got me wondering whether the default nofollow and link handling configurations inside wpDiscuz are sufficient to prevent crawlers from penalizing pages with numerous low-quality external references.

Has anyone else noticed crawl budget issues or metric fluctuations after scaling up active discussions? I would really appreciate any insights on how to balance wpDiscuz pagination, link attributes, and comment loading to protect site authority while keeping active community interactions.

I'm sorry but the wpDiscuz doesn't have such a feature. We'll take this into consideration for the future versions.

The new version is ready. Please update the wpDiscuz to the latest version and check again.

Please remember to clear all caches before testing.

OK, it seems fixed. Thanks.

The new version is ready. Please update the wpDiscuz to the latest version and check again.

Please remember to clear all caches before testing.