1. No sound while online play: please try it after the network is kept stable. If the problem persists, please submit feedback in the app and please provide a screencapture of the specific series, episode, and the issue you are experiencing;

2. No sound while offline play: please try it again after you have deleted the downloaded video. If the problem persists, please submit feedback in the app and please provide a screencapture of the specific series, episode, and the issue you are experiencing;.