IPTV66 Freezing issue

IPTV66 Help here!
I am using the smart app for my lg tv.I have done iptv reset and same result.I even changed the portal too.
I would like to change it to m3u player.But I do not know how to do it on smart stb.Could somebody give me step by step instructions how to do it.I tried changing Mac adress on route checker.I even tried changing Mac on smart stb app.
Help would be appreciated.