Since its a zigbee keypad it may not hurt to perform a zigbee repair:
ZIGBEE HEAL: UNPLUG AND PLAY
For zigbee, healing the networks occurs automatically whenever the
hub is powered off for about 15 minutes or more. It may take an hour or
two before the routing tables rebuild completely, but you don't have to
do anything other than unplug the hub, wait at least 15 minutes, and
then plug it back in.