wrong password

I logged of my main account and went to my alt but when I tried to login my main account the password wasn't working so i changed the password on the website and it worked but on the app and in the game the password hasn't been changed:/

my brother and I play minecraft together a lot, but the only server that allowed us to play together was broken lens. He didn't have an Xbox account until the new update where I made him one. He logged into the account fine and he played other servers fine, until we tried to play together on...

I've made an account online and everytime I try to login or register on the server it says "Wrong password" but I know it's right.