Premise theme conflict

Hi,

I am hoping someone can help me.

I am having an issue where my header and sidebar opt-in widget are removed when activating the SSL checkout page in Premise.

Copyblogger support has not been helpful AT ALL so I am hoping someone has insight here.

Home page with header and opt-in widget displayed correctly: https://yourguidetonourishment.com/

Checkout page where they are removed: https://yourguidetonourishment.com/checkout/?product_id=642

Any help is GREATLY appreciated! Thank you!