Hi there...sorry about your camera. Have you tried to do the immediate fixes?
You can try this in order, if an app becomes misbehaves...
Force the app to close down*by pushing the home button twice or by doing a 4-finger swipe to bring up your multi-task bar. This will show all the apps that you have visited. Press the app, until it begins to shake. Close out the apps by pressing the red circle in each app. It will only quit the app and not delete. Than try to re-open the app and test out.
If that doesn't work, restart the iPad by pressing the power switch down to power off.
Third is to do a reset by holding the power switch and home button together until you see the apple logo. Hope that helps!
P.S....by the way, I just deleted your other post as it was a duplicate of this one. Please do not do this since it makes it hard for other members to read and help you of there are multiple threads of the same topic present. It is also against forum rules.