CF7- custom form trouble

Hi,

I’m getting the error message “There was an error trying to send your message. Please try again later.” when testing CF7.

Themeco support replied with “It looks like it’s expecting a captcha, it’s included in the response but NULL. I checked your CF7 integration and yes, there is reCaptcha. Please check if it’s integrated properly, or please contact CF7 author for this matter.”

I have not setup reCaptcha, nor is it in my code:

<div style="float: left; width: 50%;">
<input type="text" name="first" placeholder="First Name" />
</div>
<div style="float: right; width: 50%;">
<input type="text" name="last" placeholder="Last Name" />
</div>
<div style="float: left; width: 50%;">
<input type="email" name="email" placeholder="Email" />
</div>
<div style="float: right; width: 50%;">
<input type="text" pattern="[0-9]" name="telephone" placeholder="Phone Number" />
</div>
?<textarea id="txtarea" rows="5" cols="50" name="message" placeholder="Message"></textarea>

<b></b>
<p>[submit "Send"]

Could the problem be in the mail settings?
To: [email protected]
From: [your-name] <[email protected]>
Subject: Artillio Designs | Website Design and Development “[your-subject]”
Additional Headers: Reply-To: [your-email]