As someone who loved reading novels, I didn't get the latest online knowledge and event information in real time. However, in general, there may be the following reasons why members of QQ Video cannot watch it: 1. Failure of the video system: This is more likely because the video system often fails, causing some member rights to be unusable. 2. Video content update: Sometimes, the video content will be updated and the copyright may be changed, causing users who have previously purchased a membership to be unable to watch the updated video. 3. Expired membership: If a user purchases a membership of the video streaming company but does not renew it in time, the membership may expire and the user will not be able to watch the expired video. The above are just some common reasons. There may be other specific reasons. If the user finds that he cannot watch the video, he can contact the customer service of the video company to solve it.