Hi there!
The notice about “Legacy API and HPOS are both active on this site” typically refers to WooCommerce on a WordPress site.
HPOS is the new WooCommerce order storage system, designed for better performance and scalability. It is now being rolled out gradually and may activate automatically after updates.
However, the issue of blank cart and checkout pages is unlikely caused directly by Legacy API or HPOS. The issue you are facing maybe due to plugin conflict or theme settings you are using on your site.
In orde to troubleshoot this error. I would suggest you run a conflict test by following the insturction from this article. https://woocommerce.com/document/how-to-test-for-conflicts/
If you still face the issue even after runing a conflict test,
In the meantime, I’d like to understand your site properly. Please share with us the necessary information below for us to investigate the issue further
- System Status Report?which you can find via WooCommerce > Status > Get system report > Copy for support.
- Fatal error logs?(if any) under WooCommerce > Status > Logs.
Once we have more information, we’ll be able to assist you further.
