Hello, my keyboard for Samsung Galaxy tab A worked perfectly, then some keys stopped working (like the whole N row ((caps,a,s,d..))) Then all of a sudden all of them stopped working, the tablet is still recognizable by the Sam A tablet and my other devices, but just doesn't type, I tried pressing caps lock to see if the lights on it would light up but they do not. The other thing is that the keyboard is integrated in the case so to look inside I would have to cut leather. Need help