Why my keyboard can't switch language suddenly?

[AC Question]

Hi.
My Samsung Note 2 keyboard just can't switch the language suddenly.
This problem appears for several times already.
After I reset, then everything will back to normal.
How to solve this problem?

 

[Ning88]

Hi I'm using a note 2. Only a few days ago my keyboard suddenly can't switch language. The arrows are still on my space bar but no matter how I swipe it it won't change. Please help I really need to type in korean

 

[Ning88]

How to reset??