I have three contact forms on my website serving varying purposes. I have previously received four form submissions which worked correctly, the last one being ten days ago on March 18th. I was speaking with someone today who said that they had submitted something, but I never received an email, and when I checked the back-end nothing had been recorded. I asked him to try again, and still nothing happened. Finally I tried it myself, and found that it didn't work for me, either. In fact, none of my three forms are working anymore!
When you hit the "Submit" button it seems to just refresh the page. It doesn't display the confirmation message, it doesn't email the form to me, and it doesn't record the form submission in the plugin's backend.
The only thing I can think of that has changed since March 18th, when the last form was submitted, is that I enabled WP multisite and created a second site on March 21st in order to utilize subdomains.
Does anybody have any ideas what could be going on?
One of my forms is available at http://academyofvoices.org/contact