Is this the event where the app opens yet it closes less than a second later? If it is, try disconnecting and reconnecting to your internet source. If this doesn't work, turn off the iPad and turn it on again, then try launching the app once more. Another method you can try might be to delete the facebook app, then downloading it again. If none of them work, your iPad's memory usage may be too occupied or your iOS operating system does not work with the current facebook update for iOS.
Answers & Comments
Is this the event where the app opens yet it closes less than a second later? If it is, try disconnecting and reconnecting to your internet source. If this doesn't work, turn off the iPad and turn it on again, then try launching the app once more. Another method you can try might be to delete the facebook app, then downloading it again. If none of them work, your iPad's memory usage may be too occupied or your iOS operating system does not work with the current facebook update for iOS.