That sounds frustrating! Since it's been an issue since purchase, it might be a hardware defect in the IT8951 controller. Try a 'nuclear reset'。 Disconnect the battery for 30 mins + hold power button to drain residual charge, then reflash.

@giray2012 said in The light remained on:

Hello, I turned off my m5stickC plus 2 device while it was connected to the computer, but the green light remained on. Please help, the computer does not see the device.

Leave it unplugged for 1 hour to drain residual power (or disconnect/reconnect the battery if comfortable).