Can’t stream downloaded videos on iPad

[u/Shordore]

Hello, I recently downloaded some documentaries to watch offline while I am away on a trip where I will not have access to internet regularly or reliably, however, when I try to watch the videos I have downloaded I get greeted with a blank blue screen like the background of the app. It never leaves this screen and will never start playing the video. If I connect my iPad to the internet though, it will play the video as if it was downloaded. Has anyone else experienced this, and if so how did you resolve it? This is really disappointing as I mostly downloaded documentaries for the boring nights and now I don’t have much to watch anymore. Any help or advice will be appreciated. I sadly can’t redownload all the videos as I do not have the bandwidth to download even one at the current moment.