you can reboot the remote
hold the menu and volume up button together
(you should see the lost connection / connected dialogue on the screen)
also make sure it's not too close to other electronics.
i think i have problems if the aTV gets too close to the bluetooth/wi-fi antenna inside the TV (not sure which, it just sometimes the remote gets flakey, and a moving the aTV on the back of the TV seems to fix it)