I will repeat what is usually told in situations like these. Make sure you think through and really do as suggested to ensure everything is done correctly.
-Your password is capital sensitive, which means if you enter a small letter where it's meant to be a big one it will be wrong password.
-You cannot use the numpad on the right of your arrow keys in the game, if you have numbers in your password you must use the numbers above the rest of the letters.
-Symbols in usernames and passwords can be problematic, along with extremely long usernames and passwords so it's overall suggested to stick to shorter ones without special symbols.
If you checked this several times and still are unable to login, you should reset your password completely by going here.
http://www.feral-heart.com/index.php?option=com_user&view=resetand follow the directions and set a new password that's simple enough. If you are still unable to login after that there might be something with your username itself or possibly account. In that case it would be suggested to create a new account on the site and try that in the game. And if you still are unable to login due to wrong username or password... Then I can surely say you are doing something wrong and should redo all these steps from the beginning.
