Form Submission Response Problem

The form on the above page works in as much as I receive the emails it generates, but the response to the page is inconsistent. If I use Chrome the response works and the “email has been sent” message is shown to the user. In Edge and Firefox though, the email is sent, but the response is never received, and the user just sees a spinning wheel (and typically will then try to resend the form multiple times, generating multiple emails).

The dev console shows:

https://www.irricad.com/wp-json/contact-form-7/v1/contact-forms/2356/feedback 403 (forbidden)

Response {type: 'basic', url: 'https://www.irricad.com/wp-json/contact-form-7/v1/contact-forms/2356/feedback', redirected: false, status: 403, ok: false, …}

But I’m not sure what is being blocked, or why Chrome doesn’t block it?

• This topic was modified 5 months, 2 weeks ago by kyudos.
• This topic was modified 5 months, 2 weeks ago by kyudos.

The page I need help with: [log in to see the link]