Hi Rosianne,
Thank you for reaching out to us. Maybe this article from WooCommerce documentation will help you to solve your issue: How to Customize WooCommerce Checkout Fields.
Please note that this issue is related with the customization of a third party plugin, not with the use of your theme. As theme authors, the installation, setting or debugging of third party plugins isn’t part of the support we will provide.
To go further, we invite you to ask for more help from the plugin authors and post your request on their support forums: WooCommerce support.
We remain available for all support requests related with the use of your theme.
Regards,