It's me HaloODST I really need help

Hey y''s me HaloODST, I'm using my little brother's account to post this. So I can't login to my account at all I know the exact password but everytime I type it all in its says to verify my password or something. And I've tried Google chrome and firefox and it's still not working. I'm pretty sure its the website but if so what do I do? Pls help. Anyways I hope y'all had a wonderful weekend!

-HaloODST