Pandaria whats wrong?

[getrekty]

so im playing on frostwollf, mop , just downloaded the game and everything is fine but it always says, you must log in with battle net account, click here to make one or here to begin conversion.
how to get rid of this and start playing

[Zelta]

Make sure to log in with your username and password (not email).
If you did any upgrade, redownload the client or these files.