If one methond is not working for you try different methods
Follow the video to find how to install iptv m3u playlist in MYtvonline app :

Tutorial how to install mytvonline2 using xtream codes logins ( use method 2 instead of method 1 presented in tutorials ( method 1 need mac address to be added in our backend to get it work )

Follow this video to setup parental control on channels and favorite :