Update: One other user wrote us back and said that a hard reboot solved his problem with the slow key pad. He said that after his device "locked" up in another app, he had to do the hard reset by holding down the power button and home button simultaneously for several seconds.
I would still recommend doing a regular reboot by holding down the top power button. When the prompt says "Slide to power off", do that and wait for it to shut down. Next press and hold the power button until the white Apple logo appears and wait for it to boot back up. Then try Time Master again to see if that helped. If either of these solve your problem, please let us know in this thread?