GetResponse HTML Opt-in Issue

Hey guys, I'm having issues with Get Response. I've tried customer support several times and not much of help.

I'm using a WordPress landing page plugin and for the opt in form it requires the HTML code from GetResponse. So I created the Plain Form in HTML, copied the code inserted to my plugin and landing page looks great.

When I test it, it fails to subscribe the entry and go on to the thank you page. My API in turned on, so I know that's not the issue. Can someone help?

Here's the landing page: bridgettemabuto.com/free-writers-worksheets/

And here's the code I used:

<form action="https://app.getresponse.com/add_subscriber.html" accept-charset="utf-8" method="post">
<!-- Show the name field(required) -->
name: <input type="text" name="name"/><br/>
<!-- Email field (required) -->
email: <input type="text" name="email"/><br/>
<!-- Campaign token -->
<!-- Get the token at: https://app.getresponse.com/campaign_list.html -->
<input type="hidden" name="campaign_token" value="pBxI5" />
<!-- Thank you page (optional) -->
<input type="hidden" name="thankyou_url" value="http://bridgettemabuto.com/thank-you-writers/"/>
<!-- Add subscriber to the follow-up sequence with a specified day (optional) -->
<input type="hidden" name="start_day" value="0" />
<!-- Forward form data to your page (optional) -->
<input type="hidden" name="forward_data" value="" />
<!-- Subscriber button -->
<input type="submit" value="Subscribe"/>
</form>