That all came out fairly recently. I don't remember exactly how I got past it, but I think I started the sign-up for a sponsorship, then backed out, and all was well.
Assuming you do, just click the play tourneys tab on the left.
Be forewarned that the game is VERY different in mobile. I found putting to be nearly impossible. It's also more difficult to aim where you want.
So now I just use it to get video credits.
Hope this helps in its vague memory management.