Lost subtitles when upgraded from 15 to16

Hello,
I purchased a GooBang Doo M8S TV Box Amlogic S812 Quad Core (Fully loaded Add-ons and KODI XBMC), and recently upgraded from KODI v.15 to v.16, but now when I try to watch a movie (mostly on PrimeWire (1Channel)) for subtitle selection I always receive the message "No subtitles services installed". IN v.15 I was getting the subtitles. How do I install these services?

Can you please help with this issue.

Thanks a lot,
Monel