Don't forget you'r playing an American sport now, so the first listed team in a fixture is away, not at home. Your last three fixtures have been away, and two of them were scrimmages (friendly) so there's no ticket sales for them anyway. Your last home game was on 19th January. You should have got money for that, but as it was a relegation playoff, I'm not sure if you would have got ticket money.
Anyway you have a home game tomorrow, so check your economy after that, and see. If there's still no ticket money then it's a bug. Good luck, and stuff.