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.
Hey you posted on my other post? i am banned currently and don't have any gold more then 50g on my account XD can i please get my account unbanned already? you can look at my past transactions or anything