Waited a week plus for a response then they closed my ticket.

Hi @mnjon,

Apologies for the confusion. Since we didn’t receive confirmation from you regarding the security settings being disabled for a week, we marked the support thread as resolved: https://wordpress.org/support/topic/woocommerce-checkout-page-not-loading/

Could you kindly reply to the support thread with the steps we’ve shared?

Looking forward to hearing back from you!