I'll be taking the train from Copenhagen airport into Sweden. There are ticket machines in the airport but sometimes the lines are very long so I'm considering buying the ticket online at https://www.sj.se/
I know that I will take the train on that particular day but depending on when the flight comes in it may be an hour earlier or later.The cheapest fare class is called "non-rebookable". Is that ticket valid for the whole day or ONLY for a the specific time slot as booked?
The conditions seem unclear on this point
Non-rebookable Tickets in this flexibility category cannot be rebooked. The price you paid for your ticket will not be refunded and the ticket cannot be transferred to another person. If, on the other hand, you are unable to travel due to sickness, you will receive a refund on presentation of a medical certificate.