Code \n with captha

I've enabled re-captcha plugin, but the plugin "Public Mail" need the captha.
So I've enabled ALSO this.

In the profile I need the plugin in a "Button with Sticky Overlay", but now I see a lot of the code "\n" and the sound start automatically.

Please see the website

Second question: there is a CB standard mode to hide the email address and with the possibility to send a message to user with a form, like in Joomla.

Thanks in advance

Don't understand the question. Nor do I understand what I'm supposed to be looking for with your link? CB has no support for reCaptcha. We have CB Captcha, which appears to be working fine. We also did not develop CB Public Mail so I've no idea how it'd behave nor can I help you with it, you need to contact its developer.

Second question: there is a CB standard mode to hide the email address and with the possibility to send a message to user with a form, like in Joomla.

You mean like a private message? You could use UddeIM for this.

About the first question I've already written to developer, but I thought that the problem is in the mode that is showed the captcha plugin when it is in a box linked with the button of the profile.

About recaptch: perhaps I remember bad but I thought that is in the CB package.

About the second question, in the Joomla there is the plugin "Content - Email Cloaking"; with this a click over the email address opens a form and not calls the email client.

About recaptch: perhaps I remember bad but I thought that is in the CB package.

Nope, we have no reCaptcha. We have "CB Captcha", which is available for download in Advanced downloads section. If that's what is installed and it's what you're having problems with then we can debug further.

About the second question, in the Joomla there is the plugin "Content - Email Cloaking"; with this a click over the email address opens a form and not calls the email client.

Email form is already enabled by default, but if it was disabled for whatever reason you can adjust it within CB > Configuration > General and set "Email Handling" as necessary. This does not apply to email fields, but only to the primaryemail field. We do not use Joomlas email cloaking. We cloak all emails rendered by email fields using javascript so bots just get "..." instead of the actual email address.