Order canceled with no reason.

I ordered their Friday 10 September 2021 promotion online and my order was canceled with a message that the driver could not deliver. Like how? Sunday I ordered my food was delivered, Monday I placed another order and I received my order but today all of sudden a driver cannot deliver? This is cheating. They deliberately did not deliver because the promotion was cheap. Why put it on your app if it is going to give you chest pains when you have to deliver it to your customers?