just to be clear, do you have to hold it til the red light goes away or does it just have to show up for it to be done?
still wondering about the travel mug 2...
you're overthinking it. Hold the button down. See red. Let go. Its a one step process, hold it down again if its not working.
Fwiw I had one of these that would not reset. Eventually found out the button itself was faulty. Replaced it through warranty since its under the year mark.