On an Up-sell popup, you can choose to redirect buyers to the cart page or checkout page.
In order to make the change, please visit app Settings >> Up-sell Settings >> "Call-to-Action button will motivate customers to" and chose "Cart" or "Checkout"
- Note: When an Up-sell offer first pops up, you will see the CTA button displaying in white. It will turn into green as soon as an up-sell suggestion is added to cart.
- Besides, by ticking the option "When clicking "View cart" from Up-sell popup, use Boost Sales cart popup instead of store's cart page/cart popup", Boost Sales will use its own cart which can make the shopping experience less time-consuming. However, if you are using Last step Up-sell offer then this option should be left unticked since the Last step Up-sell offer can only be triggered by clicking the "Checkout" button on a specific cart page.
Here's how it looks on the storefront: