Signing into Xbox live on Minecraft for iPhone

When I try to sign in to Xbox live on Minecraft on my phone it would ask me for my email I would type it in then it would ask me for my password and I would type it in and lastly it would ask me for my age and I would type it in and then I would click
next and then it would try and make me type in the month I was born again and again and again So why does it not like June and not let me go past that point and sign in

:)