Hmm, try clearing the cache & restarting your device. It can also help if you uninstall and reinstall the app. These steps usually do the trick. If no general troubleshooting helps, let us know!
@TeamYouTube why is your iPhone app not working during night time for the past 2 nights. Videos and app dint load 
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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