My keypad is split in half and at the top of my iPad? What happened?

With a finger on each half of the keyboard, drag the two halves together and drag it back down to the bottom.

You can fix it in 3 ways

1. Drag keyboard toward each other with 2 fingers

2. Hold the keyboard button down for a second or two and select merge

3. Settings>General>Keyboard>Split Keyboard>Off.