The NBA App is available in the US on the Comcast XFinity Flex Platform and XClass TV.
Fans can access their NBA Account or NBA League Pass by signing into their account within the app. In-app purchases of League Pass are not available at this time.
If you have any issues with the NBA App or accessing your NBA League Pass subscription, please contact support here. If you are having issues with your Comcast Xfinity Flex device or the XClass TV, please reach out to Xfinity support at https://www.xfinity.com/support/tv.