A few notes:
– This demo site has a standard WooCommerce installation without extra add-ins or plugins and without caching. It uses the Storefront theme with minimal modifications.
– You can place trial orders, after which you will receive confirmation by email. Subsequently, all your personal data will be deleted.
– The occupied items and stock levels in the examples are derived from actual processed (i.e., paid) orders for the respective events. Your trial orders are not processed, and therefore the ordered items are not displayed as occupied.