Hello @fadi232,
I do not know if this is your case …
In my case I have the Better WordPress Recaptcha (Versión 2.0.3 | Por Khang Minh) plugin installed, and when I turn it off the form works perfectly.
I do not know if this is your case …
In my case I have the Better WordPress Recaptcha (Versión 2.0.3 | Por Khang Minh) plugin installed, and when I turn it off the form works perfectly.
The same thing happens to me in several websites, and we do not detect any errors in the mail system, or even sending attempts.
It worked correctly, we detected the error a couple of days ago.
We are using the latest versions of wordpress and contact form 7.
*Wordpress 4.8.1
*Contact Form 7 4.9
These are some examples:
http://www.construccionespellicer.es/contact/
http://www.mtfitnessrenoir.es/preapertura/ (with paypal addon)
http://www.mtfitnessrenoir.es/contact-us/