You got it right, I am a bit slow in many things.
If you want to go to the next level in this game you pay in gold bars. Once the gold bars get over, you can ask your friends for life. If you don't have friends, you can invite friends. So more people get to play the game. Or you can pay and buy more gold bars, which also come with offers.
Now this post of mine may be read by more people because I used the words candy crush. Great!