That domain is not affiliated with the developers (who are anonymous). Check Reddit threads first; most "official-looking" sites are fake.
Allows users to log into their Google accounts to sync subscriptions and history. How to Install SmartTube on Your TV Box How to Install SmartTubeNext on Android TV Box? [Guide] stube box v4 tv apk link
The EPG feature provides users with a schedule of upcoming programs on live TV channels, helping them plan their viewing. That domain is not affiliated with the developers
This long-form guide will walk you through everything you need to know: what Stube Box V4 is, its features, the risks involved, step-by-step installation instructions, and—most importantly—where (and where not) to find the official APK link. How to Install SmartTube on Your TV Box
on how to enter those codes into the Downloader app on your specific TV model?