I have been experiencing this since after my first time downloading the game. I was able to connect then, and every time since I have received the "Cannot connect to 2kSports servers" when I load the game up. It is rather infuriating.
Yeah, it's really frustrating, that's reason I bought the game was to play online (PC). Of course soon as I buy the game, magically the servers start acting up, just my luck.