Captcha Error after change of Domain

I have used Vis Forms in my website, previously under a particular Domain Name, which I have recently changed.
I notice the Form now produces this Error " Invalid Domain for Site Key"
I do not know what this is about and where or how to correct it.
This is preventing potential Members being able to Submit the Form.

In anticipation
Owen Carlton

Hallo,

actually this has nothing to do with Visforms itself and even the message does not come from Visforms but from Google.
It is Google that provides the Recaptcha API and that requires you to get a matching Google Recaptcha API key, which you can get from Google.
It is the Joomla! Recaptcha Plugin that actually creates and manages the Recaptcha then on your website.
And Visforms just triggers the Plugin, so that it displays a Recatcha inside your Visforms form.

Usually the Google Recaptcha API key is domain specific, so if you change your domain name you have to get an new key from google.

Please check out the Joomla! plugin "Google Recaptcha" and the Google documentations for more information on how to get a matching key and fix this problem.

Regards,
Aicha