WooCommerce Stripe gateway, custom checkout with conditional fields and the dreadful "Please make sure your card details..." error message
Conflicting custom post type archive slug and page slug in Wordpress
Tl;dr CPT archive with same slug is prioritized over page - if not, flush your permalinks.
Sage, gulp and npm on Windows
tl;dr Use nvm for Windows. Run gulp in Windows instead of a virtual machine.