We're looking into a few cases where mobile live streams appear deleted if metadata (title, description, tags) or change privacy setting (public, unlisted) is edited while processing. It shows: "the video has been removed by the user". Thanks for the reports–updates to follow!
If your application is still under review, you should hear back by end of June. We're sorry for the delays and here's more info on what we're doing to get through our current backlog. Thanks for your continued patience!