Because these playlists frequently expire, the "useful text" you provided is likely a search string used to find the on forums or GitHub repositories. Users often search for this specific term on platforms like Telegram to find the current active server address for the Kralkerim source.
Follow the MagicPlayer Setup Guide on Infomir to input the URL directly into your device's control panel. Download channels kralkerim plus m3u
Be cautious when downloading .apk or .m3u files from unofficial sources. Ensure your antivirus is active and consider using a VPN to protect your privacy while streaming. Because these playlists frequently expire, the "useful text"