Hi, I got this error message every time I tested it on my site: Failed To Verify Referrer
I have checked with my hosting company. All the SMTP settings are correct.
I really don't know what's going on and would like to seek your advice.
P.S. I used your plugin in earlier version of wordpress. There was no issue. It's a great plugin. But this is a new web-site I am starting using the latest version of 3.8.