Reply To: Split: Having a Sorry Your Session has expired. Return to shop error

Hello,

Okay, understood. I have checked it on the default WooCommerce Storefront theme and it seems that there is the same issue – https://take.ms/z5qDu, it means that the issue is not related to the theme because the same issue persists in the default theme and those functionalities (Checkout/ Thankyou page) are related to WooCommerce so I think the issue is on their end. I suggest you contact with the WooCommerce team support and ask them to investigate it from their end.

Let me know the result.

Kind Regards