Last week was the first time I've finished all level. Since then I came into the game 3 times without playing and accepted at least 10 lives from my friends. I now played 5 times and have no more lives. Where do I all the lives I accepted?
You can only have a maximum of 5 lives in the game so you should only accept your inbox lives when you need them. If you accept them and exit the game you will lose them. It's a good thing to keep in mind.