You get different ratings for different time controls. Your rapid rating is 556, but your daily rating is 274. They’re rated differently because some people do better at some time controls than others as different skills are required depending on how fast the game is.
If you play a 10/0, 15/10 or similar game, you’ll see your rating is still 556 
Last night when I stopped playing I had a rating of 556; this morning when I went to play, my rating had dropped to 274, even though I played no games. How did this happen?