Nothing in the cart!
If the Bot added your item to cart and you signed in into your account on the website and didn't find anything, it doesn't mean that the bot didn't add anything. Actually, it did!
Some websites don't allow 'merge sessions'. That means that when the Bot adds to cart and you open the browser on your own to see your cart on that account, you will not see the item because it is not the same session as that of the Bot's task.
In this situation, the Bot will still check out, just use the auto checkout feature or you can manually check out the item yourself by right-clicking the task that added to cart and clicking on 'Browser Check Cart'.
If you don't know how to check out manually, you can follow this tutorial.