You will not receive an e-mail or SMS when it's your turn to buy tickets. We advise you to leave the queue open and to look at it (occasionally). You may refresh the queue, but it's not necessary and will not affect your position.
While you are waiting, you will receive live updates of the expected waiting time and your chance to get tickets. As soon as it's your turn, you'll see it on your screen.
If the tickets are sold out, this will also be shown.