How to Fix Contact Form 7 Spinner Keeps Loading (2026 Guide)

One of the most frustrating issues with Contact Form 7 is when the loading spinner keeps spinning forever after clicking the Submit button. The form never completes, visitors don't receive a success message, and you may lose valuable leads without realizing it.

This problem is usually caused by JavaScript errors, AJAX failures, caching issues, or server configuration problems.

In this guide, we'll explain the most common reasons why the Contact Form 7 spinner keeps loading and how to fix it.

Symptoms of the Endless Spinner Issue

You may notice one or more of these problems:

  • The loading spinner never disappears.
  • The form doesn't show a success message.
  • No email notification is received.
  • The page doesn't refresh.
  • The submit button becomes unresponsive.
  • The form appears frozen after clicking Submit.
  • AJAX requests fail silently.

Why Does the Contact Form 7 Spinner Keep Loading?

The endless spinner usually means the form submission never completed successfully.

Common causes include:

  • JavaScript conflicts
  • AJAX request failures
  • REST API issues
  • Caching plugins
  • Cloudflare or CDN configuration
  • Security plugins
  • Server firewall restrictions
  • PHP errors
  • SMTP or email configuration problems
  • Outdated plugins or themes

1. Check for JavaScript Errors

The most common cause of an endless spinner is a JavaScript error.

Open your browser's Developer Tools and check the Console tab for errors such as:

  • Uncaught JavaScript exceptions
  • Missing JavaScript files
  • 404 resource errors
  • Conflicting scripts

Fixing these errors often resolves the problem immediately.

2. Verify AJAX Requests

Contact Form 7 submits forms using AJAX.

If the AJAX request fails, the spinner may continue indefinitely.

Check the Network tab in your browser's developer tools for failed requests or unexpected HTTP status codes.

3. Test the WordPress REST API

Modern versions of Contact Form 7 rely on the WordPress REST API.

If the REST API is blocked or returning errors, the form submission may never complete.

Review your REST API configuration and ensure it is accessible.

4. Clear Cache

Cached JavaScript files may prevent Contact Form 7 from functioning correctly.

Clear:

  • WordPress cache
  • Browser cache
  • Cloudflare cache
  • Server cache

Then test the form again.

5. Disable Plugin Conflicts

Another plugin may interfere with Contact Form 7.

Temporarily disable:

  • Caching plugins
  • Security plugins
  • Optimization plugins
  • JavaScript optimization tools

If the spinner stops loading, re-enable plugins one by one to find the conflicting plugin.

6. Switch to a Default Theme

Your active theme may include JavaScript that conflicts with Contact Form 7.

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

7. Configure SMTP

Although SMTP usually doesn't cause the spinner itself, email configuration problems can sometimes interrupt the submission process.

Using SMTP improves email reliability and reduces mail delivery issues.

Popular SMTP providers include:

  • Gmail SMTP
  • Outlook SMTP
  • Amazon SES
  • SendGrid
  • Mailgun
  • Brevo

8. Check Cloudflare and Firewall Settings

Cloudflare or server firewalls may block AJAX requests or REST API endpoints.

Review:

  • Firewall Rules
  • Bot Protection
  • Security Level
  • Rate Limiting
  • ModSecurity Rules

9. Enable WordPress Debug Mode

Debug mode helps identify hidden PHP errors that may interrupt form submissions.

Review your debug log for:

  • PHP warnings
  • Fatal errors
  • Memory limit issues
  • Plugin conflicts

10. Update Everything

Always keep your website updated to ensure compatibility.

Update:

  • WordPress Core
  • Contact Form 7
  • Themes
  • Plugins
  • PHP Version

A Simpler Alternative to Contact Form 7

If you regularly experience endless loading, AJAX errors, or compatibility issues, switching to a modern form builder can save time and improve reliability.

VPSUForm provides a drag-and-drop builder with reliable form submissions, built-in spam protection, Google Sheets integration, SMTP compatibility, and advanced automation features.

Why Choose VPSUForm?

  • Drag & Drop Builder
  • Reliable AJAX Form Submissions
  • Conditional Logic
  • Multi-Step Forms
  • Google Sheets Integration
  • Webhook Support
  • Zapier Integration
  • SMTP Compatibility
  • Google reCAPTCHA
  • hCaptcha Support
  • File Upload Fields
  • Entry Management
  • CSV Export
  • Responsive Design

Spinner Loading Troubleshooting Checklist

  • āœ” Check browser console for JavaScript errors.
  • āœ” Verify AJAX requests.
  • āœ” Test the WordPress REST API.
  • āœ” Clear browser and website cache.
  • āœ” Disable conflicting plugins.
  • āœ” Test with a default theme.
  • āœ” Configure SMTP.
  • āœ” Review Cloudflare and firewall settings.
  • āœ” Enable WordPress debug mode.
  • āœ” Update WordPress and Contact Form 7.

Frequently Asked Questions

Why does the Contact Form 7 spinner never stop?

The spinner usually continues because the AJAX request failed or a JavaScript error prevented the form from completing.

Can caching plugins cause the spinner issue?

Yes. Cached JavaScript files or aggressive optimization can interfere with Contact Form 7 and prevent successful submissions.

Does SMTP fix the endless spinner?

SMTP improves email delivery, but endless loading is generally caused by JavaScript, AJAX, REST API, or server configuration issues.

Can Cloudflare block Contact Form 7?

Yes. Firewall rules, Bot Protection, or caching settings may interfere with AJAX requests and should be reviewed if you're using Cloudflare.

Is there a more reliable alternative?

Yes. VPSUForm offers a modern drag-and-drop form builder with reliable submissions, advanced integrations, spam protection, and automation features designed to minimize compatibility issues.

Final Thoughts

An endlessly spinning Contact Form 7 loader usually points to an underlying JavaScript, AJAX, REST API, or server configuration issue. By checking browser errors, clearing caches, testing plugins, and verifying your website configuration, you can resolve most cases.

If you'd rather spend less time troubleshooting and more time growing your website, VPSUForm offers a modern, reliable alternative with drag-and-drop form building, email notifications, conditional logic, Google Sheets integration, spam protection, and secure file uploads.

Create reliable WordPress forms with confidence.

Download VPSUForm and build powerful WordPress forms without the hassle.