So ive had the same problem trying to play seasons for at least 3 months now. i called ea support, and all they told me was to check back here. i can play everything else except seasons. all it says is "rewards waiting" and when i go to click on it i get this error message. i made a whole new ps4 user and logged onto madden and started a whole new ultimate team. i clicked on seasons and it let me play. im guessing this has something to do with your ea account. the only problem is that obviously you have none of your stuff from your previous account. madden 17 is just about over but you can try this if you want.