The GSE IPTV App was temporarily removed from google play-store, but you can download it from HERE.
1 - Install the IPTV App
2 - Open the IPTV App and tap on Add Playlist
3 - Tap Add URL
4 - Paste your M3U Plus
url received by email and choose any name for the playlist.
5 - Wait a couple of seconds and the Channel List will be displayed
Related:
Learn how to Setup EPG on the Android IPTV App