Whenever I try to play multiplayer it keeps telling me the login failed... I re-enter it to no effect

What account are you trying to log into?

To log into BlazeJames, go to the login menu and type in BlazeJames as the username, and type in the password in the field under the username. Keep in mind that the password is case-sensitive, so you should pay attention to the capital and lowercase letters/characters in your password.

An alternative way you can login is by using the /login function.
To do this, join a room in multiplayer, and type /login [username] [password].