Samsung TV serial number: UN55MU6300. TV loses Internet connection constantly. Usually able to get it back by rebooting TV and router, but it’s not working this time. Tried multiple times. Second, when trying to pair remote, press back and play buttons at same time, TV displays “connecting to keyboard”. Power cycled TV several times, remote still not pairing. Tried resetting remote by taking out batteries then holding power button down over 8 seconds. Not working. Thank you for any suggestions or other steps to try.