The license to be able to publish the app on iOS costs 99 €/year and the number of users for iOS after the time it has been published has not reached the minimum of users to cover the expense, so for now has come the end of its availability.
Users who already have the app installed, follow having access for a while until Apple removes the app. For later or new users of IPad, I recommend using the option of WebTV and control the player from a mobile or computer that has the app installed.
Link of store here