If you're seeing only a black screen with subtitles and audio on your Android device, this could be due to Digital Rights Management (DRM) issues with your mobile device manufacturer.
Restarting your device might resolve the issue in some cases, but in others, it will not since your mobile device may not be built to handle DRM. Known devices include several Samsung models, as well as phones from Chinese brands, though not exhaustive.
If the above troubleshooting does not help, please do write to us here.
We do encourage you to view the affected episode(s) on another device, such as a computer or laptop, as the issue should only affect your specific mobile device.