A quick reminder on V3 schedules. The V3 runs on built-in preset windows (5:30–7:30 AM and 5:30–7:30 PM). Outside those, it can appear off when it's actually working normally. See Bluetooth app for the full breakdown and how to customize them.

Make sure the adapter is plugged firmly into both ends, and test the outlet by plugging in another device — a lamp or phone charger works.

Check that the power cord is fully seated at both the diffuser and the wall adapter. Look for any visible damage along the cord.

On the V3, press and hold the power button for 2 seconds until the indicator light appears.

Reset the unit by unplugging for 60 seconds, then plug back in and power on again. Wait up to 3 minutes for the diffuser to start.