No Message Box..everything else working fine.

Hello,
Have been using contact 7 for years with great success, in recent days the “messages” once a email is sent do no show. Which makes it difficult to tell if message was sent. Yes, they are working..just no message.
Have tried deactivating other plugins with no luck, it works fine other then this one area, any suggestions?
http://bassonline.com/contact-us/

Thanks!

https://wordpress.org/plugins/contact-form-7/