When any of the tickets you have listed are sold you will be notified via email. In the email we will also tell you which one(s) of your tickets has been sold and how many are left still for sale.
Further, you can check your account dashboard in the ‘My Listings’ section on Ticombo.com. There you will have an overview of the Tickets that are ‘active’ (on sale), the tickets that you paused and the ones that are sold. When you click on the zoom button on every ticket, you can check the bar-code.