Fc mobile not working

My fc mobile is not loading , I have tried all the methods , but it still isn’t working , I have an iPhone 15 pro, I have played this game a lot , this is the first time happening to me, I took a break from playing this game for a while , then now I tried to play it again , it suddenly just won’t load , I don’t understand why but I just want to play the game peacefully , please fix this issue.