After you enable the Web Store mode you have to configure 3 pages in order for the cart to work properly.
- Shopping cart page
- Checkout page
- Thank you page
All the three pages can be configured in Products > Settings > General Settings > Shopping Cart, with the Choose Cart Page, Choose Cart Submit Page (checkout) and Choose Thank You Page settings.
If a page is not selected yet, click the Create New button next to the drop-down. The page is created with the right content and assigned automatically. You can also create the pages in Pages > Add New and select them in the drop-downs. When a page is selected, the Edit and View Page buttons let you open it.
After the pages are assigned, click Save changes to apply them.
The cart output is added to the assigned pages automatically. To control where it appears on the page, use the shopping cart shortcodes. In the Inquiry Catalog mode, see Quote Cart Pages.