This is from Android Authority….Finally, the launcher is free to use, with only a handful of features locked behind a paywall. The latter is only a one-time payment and grants features like support for custom icon packs and wallpapers. In other words, most useful features are available for free.
Will this method also allow for activating the Premium subscription on a Firestick?
Premium opens several added features and cost about $7 bucks (USD) lifetime and for unlimited devices.
https://forum.xda-developers.com/t/app-android-tv-projectivy-launcher.4436549/
spocky12
Important Notes
Premium Version: Not available on Fire Stick. The premium version requires a Google Play Store account and is only accessible via Android devices or sideloading Google Play on Fire Stick (e.g., using a device like ONN 4K).