Error message and can't get lists

Trying to install on http://www.createteachinspire.com and having two issues:

1. Can’t get my Mailchimp lists on the dropdown so I can’t direct the signups to any list.

2. Getting this error message:
Warning: Invalid argument supplied for foreach() in /home/content/p3nexnas06_data02/62/2137062/html/wp-content/plugins/woocommerce-mailchimp/classes/class-ss-wc-integration-mailchimp.php on line 358

https://wordpress.org/plugins/woocommerce-mailchimp/