The consumables cannot be reset until the RUN TIME days equals the CHECK ALERT days; then a consumable message appears on the bottom of home screen and touching this message resets the RUN TIME to 0.
If you want to reset a consumable before the Run Time the is up or if you want to change the Check Alert dats before the Run Time alert appears please follow the following process:
Change the CHECK ALERT days to 1 day over the present displayed RUN TIME days and wait the 1 day. Then the next day, the consumable message will appear on the home screen, then you can touch it and that consumables RUN TIME will start over resetting to 0 days. Now the RUN TIME days (0) are lower than the CHECK ALERT days; So Now you can then change his CHECK ALERT days.