You say that the Razor contact form is not sending emails, but how do you know that the form is not actually sending emails? This is a genuine question I am asking you because if something is happening that is telling you that the email has not been sent then please tell us about that.
The fact that you don’t receive emails from the form doesn’t mean that the form isn’t sending them. The contact form uses the standard WordPress wp_mail() function to send the email, and if that function does not complete successfully then PHP itself should display an error message. Also, the thankyou message can only be displayed if the wp_mail() function succeeds. So the fact that you don’t see a PHP error message (unless you have suppressed PHP error messages) and the fact that you see a thankyou message means that the PHP wp_mail() function has done its job of passing the email to your mail server for sending out.
I just submitted the contact form on your home and I got a “Thank you, your message has been sent.” message. So the form email is definitely being sent.
Now the remaining question is, why aren’t you receiving emails that are being sent by the inbuilt Razor contact form?
Have you checked that the email address to which form submissions get sent is correct and allowed by your web hosts? Some web hosts will not allow you to send an email via a web form from the same account to itself; so, for example, if you have set the form to send the email to the same address as the server configured primary email address, or to the same address as set for WordPress (Settings > General), this may result in the email that is sent disappearing into a black hole on your server. Also, some web hosts will not allow web form submissions to be sent to an address that is not at the same domain as the website. So check with your web hosts about these things. You should also check that the form email is not going straight into your junk mail folder.
