Non seasonal hero

Hi a few days ago I was playing and got disconnected abruptly. I couldn’t get back on, and some google searches brought me here. Apparently the season ended early? Now in order to get back on I need to do a roll back? If true, how? I seen no options for this?

I am on Xbox and having a problem too. My seasonal hero when I go to start the game it says in red non seasonal hero. Joe to proceed?