It is not possible to book second class tickets on some SJ departures in the app and on the website. The problem affects regional trains on the Stockholm-Gothenburg route and some SJ users, unclear how many. 

– First of all, we advise travelers to try to log in again and book. If that doesn't work and they don't get the ticket they are looking for, they should have a dialogue with the staff on our trains and explain the situation, and they will be able to resolve it on the spot, says Niklas Ekström, press manager at SJ. 

The problem has been ongoing for a few days and is expected to be resolved by the end of the week. The cause is said to be a technical error. 

A traveler who Expressen spoke to is irritated by the disruption. He commutes on the route and says that it is now becoming more expensive to travel. 

– It's crazy. I often travel between Gothenburg and Stockholm. It gets expensive, he says. 

SJ apologizes for the inconvenience. 

– We of course regret the entire problem that has arisen and how it affects our travelers. And we are working very hard to try to solve it as quickly as possible, says Niklas Ekström

Source: Expressen.se