Custom storefront checkout goes to theme website

[paragkatoch]

I have build a custom website using Shopify storefront api, but when I try to checkout I end up on the shopify theme website cart page

Also if I am logged into shopify and then try this I go to the checkout page, but when I try the same without logging in then I go to the theme website cart page

[MaSchVam]

We have the exact same issue. If we connect to a VPN and select North American servers, we can go through to the checkout. This seems to be some weird geo-related issue with the API at the moment (Our best guess). We have notified Shopify Partner support and given them a way to reproduce the issue.

Possibly related:
https://community.shopify.com/c/shopify-apis-and-sdks/every-checkout-ends-up-out-of-stock-error/td-p...