The switch has been installed and operating correctly for several months.  Recently, the switch has been turning the light off about 30-40 minutes earlier.  I reprogrammed the OFF time on the switch by deleting the OFF function, then adding the OFF function back in at the desired time.  The light turned off even earlier that before.  I deleted both on and off times and reprogrammed them - on worked correctly, off did not and turned off even earlier than before.

How do I go about resetting/restarting/deleting the schedule or just what do I do.  Thanks for any answers.