The issue of the customer statement balance to appear on the Receipt is still a big huddle to deal with. Even if you use a custom theme to do it, it does not succeed because their is some failure as in linking the customer statement to the Receipts. At least the themes custom have worked out on providing the amount in words. But bringing the remaining customer balance on the receipt after deduction of the amount receipted is surely a huddle that needs manager.io team to deal with.