Q: FaceTime

Note sure what you are asking specifically, but perhaps this will help: http://support.apple.com/kb/HT4319

Try a rest: Simultaneously hold down the Home and On buttons until the iPad shuts down. Ignore the off slider if it appears. Once shut down is complete, turn the iPad back on using the On button. In some cases it also helps to double click the Home button and close all apps from the tray before doing the reset.

You may want to try this:

Settings > General > Reset > Reset All Settings and setup FaceTime again.