Install the plugin called e2m3u2bouqtes, it is now part of openATV as standard and will take your m3u, username, password and epg url. You can also use this webpage by
@dsayers2014 to create a terminal command to use in webif and it will do everything for you. It will be quicker as you can copy and paste your details.
https://e2m3ubouquetgen.yolasite.com/
Note to all: Never EVER paste your m3u link on just any old webpage. They can harvest your m3u link and share them, this can result in the server being found and shut down.
@dsayers2014 is a long term member on this site and a VIP.