Make sure to check in which room you are playing and what are the entry fees and rewards before starting a game.
When you start a game, the entry fee is automatically withdrawn from the balance of every player. The entry fee is needed to start the game and is not added to the reward.
When you win a game, the reward is automatically added to your balance.
For example, let's say you have 6000 chips in your balance. When you start a game in the Solo-Beginners room, 5000 chips will be taken from your balance. Your balance will then be at 1000. If you win the game, 12 000 chips will be added to your balance. You will then have 13 000 (1000 + 12 000). If you lose your balance will stay at 1000.