Video clips from ebook doesn’t play on digital editions

[liangxingzhu]

Hii friends, I purchased an ebook that requires to use on digital editions. However, the video clips from the ebook doesn't play on digital editions app. It worked before, but it stopped working after I redownloaded the app. Anybody know how I can solve this problem? Btw, I also tried to reinstall several times but still not working.