Vientiane Railway Station

I’m at the railway station in Vientiane trying to book a ticket to Vang Vieng for in a few days time but it looks closed ? You can get inside but theres loads of people sat on the floor and outside with luggage. The elevators are turned off and the automatic doors aren’t working. Does anyone know what the deal is? There’s no signs anywhere! I came to book in person because there’s no tickets available on 12goasia or any other online booking agents