This is where a landing page will be. At some point before the user is allowed to pay for or try the app, there will be some kind of warning as follows:.
As explained by the apple developer documentation
embedded media cannot be played automatically in Safari on iOS—the user always initiates playback.
One of the features of this app is synchronized control and playback of videos within a meeting 'room'. But this is not possible on iOS Safari due to the limitations imposed by the platform.