It's not a bad train station, but you can't buy a ticket without a card for cash, there are no ticket offices. It seems that you can buy it from the inspector on the train itself.
Clear. There is a market nearby. If you search, you can find a phone outlet. If there are any language problems, they can answer in Russian at the checkout.
The toilet is paid, 50 cents, there are no elevators, you have to carry suitcases between platforms. The train to Vilnius departs from the platform closest to the entrance