Problem with AJAX subscription form and custom fields

I use the AJAX subscription form http://www.campaignmonitor.com/downloads/ajax-subscription-form/ and it works so far with "Name" and "Email".
If I add a few custom fields, the form still works, but the custom information (Interests) won't show up in the subscriber database. Just the name and email address.
Any ideas?

<div id="theForm">

<form action="XXXXXXXXXXXXXX.com/t/y/s/djkuv/" method="post" id="subForm">
<div>
<label for="name">Name:</label><br /><input type="text" name="cm-name" id="name" /><br />
<label for="djkuv-djkuv">Email:</label><br /><input type="text" name="cm-djkuv-djkuv" id="djkuv-djkuv" /><br />
<label for="Interests">Interests:</label><br />
<input type="checkbox" name="cm-fo-jtiuul" id="cm75875" value="75875" /> <label for="cm75875">Hockey</label><br />
<input type="checkbox" name="cm-fo-jtiuul" id="cm75876" value="75876" /> <label for="cm75876">Soccer</label><br />
<input type="checkbox" name="cm-fo-jtiuul" id="cm75877" value="75877" /> <label for="cm75877">Baseball</label><br />

<input type="submit" value="Subscribe" />
</div>
</form>

</div>
<div id="confirmation" style="display: none;">Thanks for subscribing</div>
Mathew Mathew, 7 years ago

Hi,

Can you give us a URL to the page your form is on? We can take a look for you.


Get in touch with us on Twitter: http://twitter.com/campaignmonitor
We're also on Facebook: http://facebook.com/campaignmonitor
FH, 7 years ago

Thanks. Sent you the URL over the support form.

200,000 companies around the world can't be wrong.

From Australia to Zimbabwe, and everywhere in between, companies count on 
Campaign Monitor for email campaigns that drive real business results.

Get started for free
1-888-533-8098