Issues with Hotmail account and/or Samsung S3 email application

Something is wrong either with my Hotmail account or my email application on my phone(Samsung Galaxy S3). I started getting notifications that says hotmail sign-in failed so I deleted the account from the application and tried signing in again. It didn't work. I changed my password twice but I was told that I entered incorrect details. I have another Live account but that works well. What should I do? I can't afford to lose this Hotmail account as I use it for a few vital reasons (uni, etc). Please help as soon as possible!