When they are created, business accounts are assigned a catalog and price group. In the storefront, account-based shoppers should be shown the catalog and price group assigned to their business account. To ensure that the correct catalog and price group is shown to an account-based shopper, you must use the latest version of the Collection Navigation widget on the Home Layout and the Shopping Cart widgets on the Cart Layout. Server side code automatically determines which catalog and price group to show and passes it to the storefront. The storefront then displays the catalog and price group it has been passed, via these two widgets. For instructions on how to check which version you are using, see Design Your Store Layout. If you are not using the latest version, you must upgrade to it. See Upgrade deployed widgets for instructions on how to do so.