From the blog "Emby Blog"

The Emby team hopes you and yours are enjoying a Happy Holiday Season.  We would like to announce a couple of changes that will hopefully increase the value of Emby in all of your households. First, to aid in the transition from our old TV-only Android TV app to the new Standard Android app on that platform, we will be eliminating the need for the app unlock by allowing free playback for up to five TV devices per Emby Server.  Devices beyond that limit will require Emby Premiere.  Previousl