Split-Screen / single Race problems

I just bought Forza 7 or my x-Box One S. But I’ ve got some problems with it…

  • I can’t start a single Race, only a campaign"
  • I can’t start a split-screen race
  • One registered player is logged in, one guest is logged in
    → if I hit “start race” the box requests to “homologize” the car
    → in this state, the box always steps back to player 1 … and again, and again, and again…
    Does anybody know how to solve this issue?
    Best Regards