Why candy crush is just loading and couldn't play anymore???

It was started last week, whenever I start the game it will only load until 5% then it will stay like that forever!!!! Why?? What do I need to do to start the game again and load it until 100%?? My level is in 900 something and Im playing in facebook. My connection is fast and I can play the other apps except the candy crush saga, please if anyone know here please teach me how to put it back to normal, please!