Last night before sleeping I had bought a used aircraft off the market and set up routes for it, but I was having it delivered to the wrong airport. Woke up this morning and ferried it to the right airport and scheduled the routes, which had just got a slot warning but they were still in place. So both the routes ran for 2 game days with passengers, but I just got a message today (game day) stating that the slots were removed on the route, and I just had to repurchase them.
Disgraceful, I am already short of money and I dont need slots being removed for no reason. I had suspected errors before but today is the first day I have seen that there is an error without any reasonable doubt.