Please clear cache, restart the playback platform, keep the network connection stable and try again. If the playback is still unavailable, please send feedback with the specific name and episode number of the series and screenshots on the playback platform.
Here are the ways to submit "Feedback" on different platforms:
Mobile App: "Me" - "Feedback"
Web Browser: Bottom of the page, click on "Support & Help" - "Feedback"
TV App: "Settings" - "Feedback" or "Me" - "Customer Support"