Although with the recent piracy discussion, we could have acted earlier in terms of updating the community - we are transparent on what we are doing and can all be read from the announcement page.
As far as official and app goes, there is m.lemmy.world. You can select Android UI or iOS UI in the settings. But there is no official app. And Jerboa is developed for Android by the same developers as Lemmy itself.
As OP said, he has received a reaction from the admins and with that his question is answered. I'll close this topic for now since this is not a discussion community on what is piracy and what not.
And was better than this one