if you change your system language to arabic, you should see it display some arabic text in your menus. As the replacement font is set correctly in that skin.
But you need to understand how translations work. Every screen/plugin needs the PO language files that lists the alternative language words.
Epg is pulled normally from Rytec or IPTV provider. This will be in English and doesn't get translated on the fly. There are old plugins like youtube epg translator that will translate epg via Google translate.
As for subtitles dont know exactly how that works but in the main settings there should be settings to change audio and subtitles primary languages. Never changed them so cant be if any more assistance there. Especially as i have never used openpli which is totally different than most builds i use.
