We are currently investigating an issue related to sites running an out of date version of the MailChimp for WooCommerce plugin.
We are in the processes of batch updating this plugin across our network and will update this post as soon as more information is available.
UPDATE 5:05 PM Central: All affected sites have been updated to the latest version of the plugin. We are going to investigate this issue and will provide more details as necessary.
If you have specific questions or concerns, please submit a ticket from your https://my.pressable.com panel or email us at firstname.lastname@example.org