Your comments

There was a minor issue yesterday, it should be fine now, please try to update again.
It's a good idea. But the videos need many spaces(about 10m/video) to store, do you have enough cloud space to store the videos?
Open the Safari browser on your device, go to , click the green "Download" button to update.
1. Open the Settings app, go to General -> Date & Time -> Turn off "Set Automatically" -> set the time to "08/01/2014"
2. Go back to and try to update again. After the app installed, open it and try to play/download a video.
3. Open the Settings and restore your Data & Time settings.
The message was posted by me. Just follow the instruction.
1. Open AppStore to install the app again (It's free) (iTunes link)
2. Buy/restore in-app features
Go to "My Videos" first
To restore "Remove Ads": click top left "No Ads", click "Restore previous purchases"
To restore "Share videos": click the blue indicator on the right side of a video, click "Share in iTunes", click "Restore previous purchases". If you have no downloaded video, go to "Channels", select a video, click the bottom right "HD".
3. Go back to install the update finally.
Read the instruction here
Go to and install the update again.
Go to and install the update again.
Please read that message and follow the instruction