Nice accessory to have handy until it stopped working. Since it is not used every day, I do not know exactly when it stopped working. Battery not the issue. Purchased February 2017, delivered April 2017. Found not working October 2019. Contacted support. Lets see what happens, shall we?
TopJimmyUpdate: the switch on the flashlight has circuitry that needs to be operating before the flashlight will work. It can take a minute or so to boot up. I replaced the battery, waited a bit, and problem appears to be solved.