Contact Form 7 Returns 429 Error When Customizing Form Fields

[marketing-2734]

Hi Support Team,

I’m currently using Contact Form 7 on my WordPress site, and I’ve run into an issue that I need help with.

The default form works perfectly:

<label> Your name
[text* your-name autocomplete:name] </label>

<label> Your email
[email* your-email autocomplete:email] </label>

<label> Subject
[text* your-subject] </label>

<label> Your message (optional)
[textarea your-message] </label>

[submit “Submit”]

However, whenever I modify the form by adding fields like phone number, dropdowns, or other inputs, I receive a 429 error in the browser console:

Failed to load resource: the server responded with a status of 429 ()
URL: /wp-json/contact-form-7/v1/contact-forms/XXXX/feedback

Here’s what I’ve already checked:

The form shortcode is correct and placed properly.

I’ve cleared the site cache.

No spam attempts or brute force activity is noticeable from our side.

When I revert to the original version, it submits fine.

Could you please help me:

Identify why custom fields are triggering a 429?

Suggest if any theme-side AJAX/JS override might be causing this?

Advise if there’s a way to extend or reset rate limits?

I’m happy to provide more details if needed. Appreciate your help!

Best regards,

• This topic was modified 1 month ago by marketing-2734.

Hi marketing-2734,

Thanks for reaching to us and appreciate your patience.

Could you please check how the plugin works with some default WordPress themes like TwentyTwenty or WooCommerce Storefront to understand if it is our theme issue or not?

Kind Regards,
Hung PD

[Author]

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