Settings in the fields are transformed into the letter "a"

What versions of the plugin and WordPress do you use? What other plugins and theme do you use? Can I see the site?

WP 3.7.1.
CF7 3.5.4.

Can I see the site?

Well …
What do you see?

https://altecgroup.ru/ndhnedhdh-ndhdh/
If you press the send button, the notification “a”

The problem of localization. In the English version all right

If the field used is not English, then all fields are converted into “а”

Where in the database stores the forms?

??