I don't think you get the whole reward, but just a quarter of the whole reward, if it makes sense. So you were rewarded just a piece of it not the whole thing. If it was at 12, now from looking at it, you'll need to win a couple more to receive the whole piece so it can go up to 13. Hope my answer helped! 😊

It means Candy Crush is suggesting which tile you can move next. It doesn't do anything. You can choose to trust the game and move the flashing tile, or you can ignore it and move another one. It's not always helpful though, so always be aware of other tiles you can move to win the game. Hope this helps 😊