To much problems

Hey everyone, I bought a android tv box one week ago, at start I tried
To download subtitles to my kodi(I got my tv box already with kodi 16.1)
And when I went to settings – video – subtitles – Default TV show service
And tried to downlias opensubtitles.org or torec or anything else I got the error message
Installation failed..
I tried ro reboot my tv box, to turn off and turn on the kodi.. nothing helps.
Than I tried to change my kodi language and again installation failed.
So I tried to clear the chache and uninstall kodi and dowbload the new version(17.1 krypton)
And after I installed the new version I got into the kodi and when I tried to change the kodi language I got there
Only one single choice – English.
And when I went to settings – player settings – language – default tv show service
I got only “none” and when I clicked get more It done nothing..
I tried anything, to download the language from “install from repository” but I got the error message
“Could not connect to repository”.
Tried also to reboot, to reinstall again, to install the 16.1 kodi again, but still
I can’t see any other language, only english, and I can’t
Connect to repository and I don’t have any subtitle option to download.
Pls help!