I have a Samsung 40" Class 4K (2160P) Smart LED TV (UN40MU6290) and bought a Logitech k400r keyboard as well as a Logitech m185 mouse to use with it as in researching for compatability I was led to believe they would work. The keyboard touch pad doesn't work at all, the function keys are messed up but the rest of the keys do work!? The mouse doesn't work at all!? What do I do? Help please?