thanks @Lukefor the hint towards this topic, it solved my issue, not knowing why the subtitle downloading wasn't running anymore.
anyway, i managed to import my account from .org to .com, uninstalled the plugin on my emby server, reinstalled it back, added the new account, new pass and now when i search for subtitles, it manages to discover them.
However, would it be suitable to have a function implemented like, i download a subtitle and is not ok, not synced... then you download another one.
Can a function like, when you download the next subtitle, to automatically delete the previous one that wasn't ok ?
Because by not doing that, you end-up having multiple subtitles stored locally on your drive and if i want to copy a movie on my tabled, or phone, then idk what which of those many subtitles is the correct one
I'f i'm talking non-sense, my bad