Plex Playback issues with Opera TV

I m using Plex through my Sony Blu-ray player with Opera TV app (vewd.com) which is able to install PLEX.
I use to have no playback issues in the past. However recently I am having some connectivity issues, I can play the movie/tv series and it will randomly lose the connection to the server, but the movie or tv series will continue to play until the end and stop. The only way is to exit from the Opera TV app completely and enter into plex again. Can someone please help me with this issue ? Thank you