When I am trying to log in my account, it quickly dispears that you are disconnected. And on the website, it says login failed, bad credentials. my name GGhsh pvp
Try changing your country IP lock setting. This is a new protection put in place to help protect accounts from being hacked. You can change this by requesting a password reset at https://en.nostalrius.org/password. It will send you an E-mail, and when you click on the link in the E-mail, you will need to update your password and select a new country lock setting.
If the country lock is suitable for your situation, then set it to 'No Country Lock' and make sure the password you choose is complex.