Contact Form 7 not submitting

Try switching to the default theme and deactivating all other plugins.

It’s on a live website, I can’t turn the site off and on again to try that. Is there another way?

This plugin author is about to become a copy/paste legend, @wtpoon, dont bother you will not have any usefull answer from author.

I don’t know if this helps, but the apache log when the button spins says “”POST /wp-json/contact-form-7/v1contact-form-7/v1/contact-forms/396/feedback HTTP/1.1″ 404 976”

same porblem and defalut them etc.