For the visual problem, try switching rendering modes inside the options menu of the game, I think yours is set to OpenGL rendering, set it to Direct3D9 instead, if that doesn't help, try updating your graphic card drivers.
For the bad token, it could be because of weak communication. The server works all fine right now so if it doesn't help if you rejoin a few times and keep getting bad token over and over again.
Try turning off other bandwidth nomming applications on your computer, maybe even other devices that uses your internet. Place yourself closer to the internet source if you're using wireless internet etc.