Xbox live is just showing blank screen

Im on IOS and I am trying to get on my xbox account but the problem is when i click sign in to Xbox Live I go in the page but its a white screen in 5 seconds and it gives me the keypad which is not working weird thing is that i can only press cancel NOTHING ELSE and sometimes i can input my email then when i press next it does the same thing PLES HELP ME🙏🏻