Can't get it to work

I am using C7 v3.9 and C7 AutoResponder v1.7, but I cannot get it add to my Mailchimp list and no logs are getting created.

If I uncheck Enable Mailchimp List Insertion the C7 message get send as expect, but if this checked it hangs the C7 form and I get the spinning icon.

I am seeing this information in firebug:

<b>Warning</b>: Invalid argument supplied for foreach() in <b>/homepages/35/r288408485/htdocs/beta_v1/wordpress/wp-content/plugins/contact-form-7-autoresponder-addon-plugin/cf7_autoresponder_addon.php</b> on line <b>182</b>

<b>Warning</b>: array_key_exists() expects parameter 2 to be array, null given in <b>/homepages/35/r288408485/htdocs/beta_v1/wordpress/wp-content/plugins/contact-form-7-autoresponder-addon-plugin/cf7_autoresponder_addon.php</b> on line <b>193</b>
{“mailSent”:true,”into”:”#wpcf7-f112-o1″,”captcha”:null,”message”:”Your message was sent successfully. Thanks.”}

Form looks like this

<input type="text" name="your-first-name" size="40" class="wpcf7-form-control wpcf7-text wpcf7-validates-as-required" aria-required="true" aria-invalid="false" placeholder="Your First Name" />

<input type="text" name="your-last-name" size="40" class="wpcf7-form-control wpcf7-text wpcf7-validates-as-required" aria-required="true" aria-invalid="false" placeholder="Your Last Name" />

<input type="email" name="your-email" size="40" class="wpcf7-form-control wpcf7-text wpcf7-email wpcf7-validates-as-required wpcf7-validates-as-email" aria-required="true" aria-invalid="false" placeholder="Your Email" />

<input type="text" name="your-url" size="40" class="wpcf7-form-control wpcf7-text" aria-invalid="false" placeholder="Your Website" />

<textarea name="your-topic" cols="40" rows="5" class="wpcf7-form-control wpcf7-textarea" aria-invalid="false" placeholder="What would you like to discuss?"></textarea>

<input type="checkbox" name="mc-subscribe" value="I would like to receive emails" />
<input type="submit" value="Book a Discussion" class="wpcf7-form-control wpcf7-submit" />

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https://www.ads-software.com/plugins/contact-form-7-autoresponder-addon-plugin/