Hey there,
After being on the phone to Apple, being in an online chat with the NBA; it turns out that the subscriptions offered by Apple (3-game pass, 8-game pass, Team Choice and others... ) were no longer supported by the NBA.
The NBA this season have 2 options, you can have the NBA League Pass Premium for $29.99 a month (AUD) this gives access to all games or there's the option of League Pass Standard that includes Ads while streaming games for $21.99 a month (AUD).
I was really disappointed with Apple because I only wanted the 3-game pass... but it wasn't available. I requested a refund and am not paying up to 30 bucks a month to watch the sport.