+1 -1 -1 Hi @MindFuLL, The way it works is that the deadline moves 1 day, 24 hours after the order was placed, regardless of what time a day it is. You could indeed think of a scenario where you potentially lose 23 hours, since the window technically is 23 hours and 59 minutes and 59 seconds. We do however encourage your customer to immediately pay, in order to make the advertised deadline. W also tell them the deadline will move backward when they choose to postpone the payment. This implementation is the closest to 'deadline starts after payment' we can get at this point.