Part of my website's signup process is the purchase of a product via Ubercart. The signup process directs the user to the checkout page with the product already in their cart. The problem I am having is when users get to the cart and then abandon their cart.
I'd like to add a block to the user profile pages that says "Your profile is not yet complete. Please click here to enter your payment info", and I only want that block to show up for users who have not completed that order process. How can I filter users in that way to make that block show up only for those select users?