remove preferred format option

Hi Chris,

Thanks for hopping in the forum. The preferred format would have to be disabled in your MailChimp lists settings on the List Name and Defaults page. After disabling it go to the MailChimp Setup page in WordPress Admin and click Update Lists to refresh the form. This guide from the MailChimp Knowledge base has details on finding the List Name and Defaults page in your list: https://kb.mailchimp.com/article/how-can-i-change-my-list-name-and-list-defaults

Let us know if you have any other questions.

-mc_d