Hello! I recently upgrade to ios 8, everything works well, but my problem is everytime i used messenger for facebook the text box doesnot automatically showing up. And when im typing my messages i need to swipe up to see what im typing. Please help

I Don't know if this will work, but it will not hurt either. Force restart your iPad. Hold down on the sleep and home buttons at the same time until the Apple logo appears on the screen, then let go of the buttons. Wait until you see the Apple logo before you let go of the buttons, that's important. No data is lost when you do this.

If the procedure demo recommends doesn't work, try deleting Messenger and downloading it again from the App Store.